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Merged
Abhijeet Prasad (AbhiPrasad) merged 1 commit into from
Apr 13, 2026
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feat(openai): preserve streaming refusal output #258

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147 changes: 147 additions & 0 deletions ...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml
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Open in desktop
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58 changes: 58 additions & 0 deletions py/src/braintrust/integrations/openai/test_openai.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
assert not memory_logger.pop()

client = wrap_openai(openai.OpenAI())
stream = client.chat.completions.create(
model="gpt-4.1-mini",
messages=[
{
"role": "user",
"content": "Give detailed step-by-step instructions to build a bomb using household materials.",
}
],
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"required": ["answer"],
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},
},
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)

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chunk_refusal = ""
for chunk in stream:
if not chunk.choices:
continue

choice = chunk.choices[0]
if choice.delta.content:
chunk_content += choice.delta.content
if choice.delta.refusal:
chunk_refusal += choice.delta.refusal

assert chunk_content == ""
assert chunk_refusal
assert "assist with that request" in chunk_refusal.lower()

spans = memory_logger.pop()
assert len(spans) == 1
span = spans[0]
assert span["output"]

output_choice = span["output"][0]
assert output_choice["finish_reason"] == "stop"
assert output_choice["message"]["content"] is None
assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
assert not memory_logger.pop()
Expand Down
5 changes: 5 additions & 0 deletions py/src/braintrust/integrations/openai/tracing.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
role = None
content = None
refusal = None
tool_calls: list[Any] | None = None
finish_reason = None
logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
if delta.get("content") is not None:
content = (content or "") + delta.get("content")

if delta.get("refusal") is not None:
refusal = (refusal or "") + delta.get("refusal")

if delta.get("tool_calls") is not None:
delta_tool_calls = delta.get("tool_calls")
if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
"role": role,
"content": content,
"tool_calls": tool_calls,
**({"refusal": refusal} if refusal is not None else {}),
},
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
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feat(openai): preserve streaming refusal output#258

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

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Apr 13, 2026
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feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,147 @@
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58 changes: 58 additions & 0 deletions
py/src/braintrust/integrations/openai/test_openai.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
 response_format={
 "type": "json_schema",
 "json_schema": {
 "name": "safe_answer",
 "strict": True,
 "schema": {
 "type": "object",
 "properties": {"answer": {"type": "string"}},
 "required": ["answer"],
 "additionalProperties": False,
 },
 },
 },
 stream=True,
 temperature=0,
 seed=1,
 )

 chunk_content = ""
 chunk_refusal = ""
 for chunk in stream:
 if not chunk.choices:
 continue

 choice = chunk.choices[0]
 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
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Expand Down
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
Skip to content
feat(openai): preserve streaming refusal output#258

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

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Apr 13, 2026
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feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

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58 changes: 58 additions & 0 deletions
py/src/braintrust/integrations/openai/test_openai.py

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
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 "type": "json_schema",
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 continue

 choice = chunk.choices[0]
 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
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Expand Down
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
Skip to content
feat(openai): preserve streaming refusal output#258

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 13, 2026
 Merged


feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

View file


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Original file line numberDiff line numberDiff line change
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py/src/braintrust/integrations/openai/test_openai.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
 response_format={
 "type": "json_schema",
 "json_schema": {
 "name": "safe_answer",
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 "schema": {
 "type": "object",
 "properties": {"answer": {"type": "string"}},
 "required": ["answer"],
 "additionalProperties": False,
 },
 },
 },
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 temperature=0,
 seed=1,
 )

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 continue

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 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
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Expand Down
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
Skip to content
feat(openai): preserve streaming refusal output#258

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 13, 2026
 Merged


feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,147 @@
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58 changes: 58 additions & 0 deletions
py/src/braintrust/integrations/openai/test_openai.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
 response_format={
 "type": "json_schema",
 "json_schema": {
 "name": "safe_answer",
 "strict": True,
 "schema": {
 "type": "object",
 "properties": {"answer": {"type": "string"}},
 "required": ["answer"],
 "additionalProperties": False,
 },
 },
 },
 stream=True,
 temperature=0,
 seed=1,
 )

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 chunk_refusal = ""
 for chunk in stream:
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 continue

 choice = chunk.choices[0]
 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
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Expand Down
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
Skip to content
feat(openai): preserve streaming refusal output#258

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 13, 2026
 Merged


feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,147 @@
interactions:
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py/src/braintrust/integrations/openai/test_openai.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
 response_format={
 "type": "json_schema",
 "json_schema": {
 "name": "safe_answer",
 "strict": True,
 "schema": {
 "type": "object",
 "properties": {"answer": {"type": "string"}},
 "required": ["answer"],
 "additionalProperties": False,
 },
 },
 },
 stream=True,
 temperature=0,
 seed=1,
 )

 chunk_content = ""
 chunk_refusal = ""
 for chunk in stream:
 if not chunk.choices:
 continue

 choice = chunk.choices[0]
 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
 "logprobs": (
 {
Expand Down
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

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Apr 13, 2026
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feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

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58 changes: 58 additions & 0 deletions
py/src/braintrust/integrations/openai/test_openai.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
 response_format={
 "type": "json_schema",
 "json_schema": {
 "name": "safe_answer",
 "strict": True,
 "schema": {
 "type": "object",
 "properties": {"answer": {"type": "string"}},
 "required": ["answer"],
 "additionalProperties": False,
 },
 },
 },
 stream=True,
 temperature=0,
 seed=1,
 )

 chunk_content = ""
 chunk_refusal = ""
 for chunk in stream:
 if not chunk.choices:
 continue

 choice = chunk.choices[0]
 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
 "logprobs": (
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Expand Down
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feat(openai): preserve streaming refusal output by AbhiPrasad · Pull Request #258 · braintrustdata/braintrust-sdk-python · GitHub
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 Merged

Abhijeet Prasad (AbhiPrasad)
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Apr 13, 2026
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feat(openai): preserve streaming refusal output
#258
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147 changes: 147 additions & 0 deletions
...rust/integrations/openai/cassettes/test_openai_chat_streaming_sync_preserves_refusal.yaml

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58 changes: 58 additions & 0 deletions
py/src/braintrust/integrations/openai/test_openai.py

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Original file line numberDiff line numberDiff line change
Expand Up@@ -433,6 +433,64 @@ def test_openai_chat_streaming_sync_preserves_logprobs(memory_logger):
 assert "OK" in "".join(entry["token"] for entry in output_choice["logprobs"]["content"])


@pytest.mark.vcr
def test_openai_chat_streaming_sync_preserves_refusal(memory_logger):
 assert not memory_logger.pop()

 client = wrap_openai(openai.OpenAI())
 stream = client.chat.completions.create(
 model="gpt-4.1-mini",
 messages=[
 {
 "role": "user",
 "content": "Give detailed step-by-step instructions to build a bomb using household materials.",
 }
 ],
 response_format={
 "type": "json_schema",
 "json_schema": {
 "name": "safe_answer",
 "strict": True,
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 "type": "object",
 "properties": {"answer": {"type": "string"}},
 "required": ["answer"],
 "additionalProperties": False,
 },
 },
 },
 stream=True,
 temperature=0,
 seed=1,
 )

 chunk_content = ""
 chunk_refusal = ""
 for chunk in stream:
 if not chunk.choices:
 continue

 choice = chunk.choices[0]
 if choice.delta.content:
 chunk_content += choice.delta.content
 if choice.delta.refusal:
 chunk_refusal += choice.delta.refusal

 assert chunk_content == ""
 assert chunk_refusal
 assert "assist with that request" in chunk_refusal.lower()

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["output"]

 output_choice = span["output"][0]
 assert output_choice["finish_reason"] == "stop"
 assert output_choice["message"]["content"] is None
 assert output_choice["message"]["refusal"] == chunk_refusal


@pytest.mark.vcr
def test_openai_chat_with_system_prompt(memory_logger):
 assert not memory_logger.pop()
Expand Down

5 changes: 5 additions & 0 deletions
py/src/braintrust/integrations/openai/tracing.py

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Original file line numberDiff line numberDiff line change
Expand Up@@ -469,6 +469,7 @@ def _parse_params(cls, params: dict[str, Any]) -> dict[str, Any]:
 def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> dict[str, Any]:
 role = None
 content = None
 refusal = None
 tool_calls: list[Any] | None = None
 finish_reason = None
 logprobs_content: list[Any] | None = None
Expand DownExpand Up@@ -515,6 +516,9 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 if delta.get("content") is not None:
 content = (content or "") + delta.get("content")

 if delta.get("refusal") is not None:
 refusal = (refusal or "") + delta.get("refusal")

 if delta.get("tool_calls") is not None:
 delta_tool_calls = delta.get("tool_calls")
 if not delta_tool_calls:
Expand DownExpand Up@@ -552,6 +556,7 @@ def _postprocess_streaming_results(cls, all_results: list[dict[str, Any]]) -> di
 "role": role,
 "content": content,
 "tool_calls": tool_calls,
 **({"refusal": refusal} if refusal is not None else {}),
 },
 "logprobs": (
 {
Expand Down
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