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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

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AI Voice Generator API - TTS

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at cheaper. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators. 👉 Check Pricing.

GenminiGen AI Sample

Note

If you want a full editor, consider GeminiGen AI Voice Generator - a web app makes video creation and editing effortless, with powerful AI options, intuitive tools, and a clean, user-friendly interface designed for everyone. Along with a dedicated platform that lets users with API access generate text to speech effortlessly.

✨ Features

Gemini TTS is Google’s most advanced and versatile text-to-speech model. It enables you to generate and customize natural, human-like voices seamlessly through simple input, blending studio-quality audio with expressive flexibility.

With this state-of-the-art model at the core, our app unlocks a suite of powerful tools designed to make audio production effortless and inspiring:

  • 🎙️ Two Powerful Models — Choose between Gemini 2.5 Flash (fast & efficient) and Gemini 2.5 Pro (higher quality, expressive voices).
  • 📝 Text & Document to Speech — Instantly convert text or full documents into natural-sounding audio.
  • 💬 AI Dialogue Generation — Build multi-speaker conversations by adding multiple dialogue blocks, each assigned to a different voice. Perfect for creating roleplays, interviews, podcasts, or dramatized storytelling.
  • 🔊 Multiple Voice Sources — Use Gemini Voices (AI voices), System Voices (native device voices), or even Your Own Custom Voices.
  • 🎭 Custom Prompt Control — Go beyond presets and define your own custom vocal instructions (e.g., soft whisper, news anchor style, bedtime story tone) to fine-tune the output exactly as you need.
  • 😊 Emotion & Style Control — Select from presets (Casual, Excited, Firm, Informative, etc.) or define a custom prompt for fine-grained vocal expression.
  • 🌍 400+ AI Voices — Wide variety of accents, tones, genders, and styles across different languages and countries.
  • ⚡ Speed Adjustment — Fine-tune playback from 0.25x up to 4x for perfect pacing.
  • 🎧 Multiple Output Formats — Export to MP3 or WAV for maximum compatibility.
  • ⭐ Voice Favorites & Management — Save your own preferred voices and reuse them easily.
  • 📊 Real-Time Credit Cost Estimate — See exactly how many credits your generation will use before you hit “Generate Speech”.
  • 🔗 Developer-Friendly API — Simple endpoints to control model, emotion, text, speed, format, and voice selection.

🎯 Usage Guide

🗣️ Text to Speech

  1. Choose Model — Select between Gemini 2.5 Flash (fast, cost-efficient) or Gemini 2.5 Pro (expressive, high-quality).
  2. Enter Text — Type or paste up to 30,000 characters into the text box.
  3. Select Emotion & Style — Pick from presets (Casual, Excited, Firm, Informative, etc.) or use a Custom Prompt for advanced tone control.
  4. Pick a Voice — Browse Gemini Voices, System Voices, or your Saved Custom Voices.
  5. Adjust Speed — Fine-tune playback speed from 0.25x to 4x.
  6. Select Output Format — Choose MP3 or WAV for download.
  7. Check Credits & Cost — The UI displays cost per character.
  8. Generate Speech — Click Generate Speech to synthesize your audio. The file will be available for playback or download.

📄 Document to Speech

  1. Choose Model — Select Gemini 2.5 Flash or Gemini 2.5 Pro depending on your needs (speed vs. quality).
  2. Upload Document — Drag & drop or click to upload supported files: DOCX, XLSX, PPTX, PDF, EPUB, MOBI, TXT, HTML, ODT, ODS, ODP, AZW, AZW3, ...
  3. Pick a Voice — Choose from Gemini Voices, System Voices, or your Saved Custom Voices.
  4. Adjust Speed — Set reading pace from 0.25x to 4x.
  5. Select Output Format — Export the narration as MP3 or WAV.
  6. Check Credits & Cost — The system shows exact credit usage before generating.
  7. Generate Speech — Hit Generate Speech and your document will be converted into high-quality spoken audio.

💬 Dialogue TTS (Multi-Voice Conversations)

  1. Choose Model — Pick between Gemini 2.5 Flash or Gemini 2.5 Pro depending on your use case.
  2. Assign Voices — Select Voice 1, Voice 2 from the Gemini Voices list.
  3. Add Dialogue Blocks — Each block is tied to a specific voice (e.g., Voice 1, Voice 2).
  4. Enter Dialogues — Type the spoken lines for each voice in their respective blocks.
  5. Customize Emotion & Style — Apply presets or use a Custom Prompt (e.g., whispering, news anchor style, bedtime storyteller).
  6. Adjust Speed — Control playback pacing between 0.25x and 4x.
  7. Select Output Format — Export the conversation as MP3 or WAV.
  8. Check Credits & Cost — Preview exact usage before generating.
  9. Generate Dialogue — Click Generate to create a multi-speaker audio simulating natural conversation.

💡 Tips for Best Results

  • ✍️ Be clear with text: Write clean, well-punctuated sentences for more natural speech.
  • 🎭 Use emotions wisely: Select an emotion (Casual, Excited, Firm, etc.) or a custom prompt to match the mood of your content.
  • 🌍 Pick the right voice: Choose voices that fit your audience’s language, accent, and gender preference.
  • Balance model choice: Use Gemini 2.5 Flash for speed and cost savings, or Gemini 2.5 Pro for expressive, studio-quality narration.
  • 🎧 Adjust speed: Fine-tune playback speed (0.25x–4x) to suit audiobooks, learning materials, or fast demos.
  • 📄 Leverage Document to Speech: For long content (PDFs, DOCX, EPUB, etc.), upload documents directly instead of copy-pasting text.

🔊 Results & Examples

See the power of AI text-to-speech (TTS) in action. Easily generate natural, expressive speech from any text with customizable voices, speeds, and emotions.
We will take the example: convert a short sentence into realistic speech.

📄 Text/Document to speech

Output audio:Listen to audio

💬 Dialogue

Output audio:Listen to audio

🤝 Contributing

We warmly welcome contributions in the form of:

  • 💡 Feature Suggestions — Share ideas to improve or expand the app’s capabilities.
  • 🛠 Enhancements — Propose improvements to performance, UI/UX, or AI model usage.
  • 🐞 Bug Reports — Help us identify and fix issues to ensure a smooth user experience.
  • 📈 Collaboration — We are open to discussions about potential partnerships or integrations.

👉 If you’d like to contribute, please reach out via Issues or contact us directly at contact@geminigen.ai

🔗 Links & Resources

About

AI Voice Generator API — Gemini TTS by Google. Create natural, human-like voices with Gemini TTS at up to 80% lower cost. Features include text-to-speech, multilingual voice support and studio-quality audio generation — with expressive tones for developers and creators.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors