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response.reasoning_summary_text.delta incorrectly uses ResponseAudioDeltaEvent #2311
Description
Confirm this is an issue with the Python library and not an underlying OpenAI API
- This is an issue with the Python library
Describe the bug
In the streaming output the response.reasoning_summary_text.delta event is represented using ResponseAudioDeltaEvent for some reason.
To Reproduce
Try running this (STR created with the help of o4-mini):
python -c 'import openai,os
for event in openai.OpenAI(api_key=os.getenv("OPENAI_API_KEY")).responses.create(
model="o3",
input=[{"role":"user","content":"Why is the sky blue?"}],
reasoning={"summary":"auto"},
stream=True,
):
print(event)'The output includes lines like this:
ResponseAudioDeltaEvent(delta='**Expl', type='response.reasoning_summary_text.delta', item_id='rs_680044dcbd9881918572b2b1a63ca6a903b0150bf71ce6fa', output_index=0, summary_index=0)
ResponseAudioDeltaEvent looks wrong. Something like ResponseReasoningSummaryDeltaEvent would make more sense.
OS
macOS
Python version
Python 3.13.2
Library version
openai==1.75.0
Activity
lemeb commentedon Apr 21, 2025
Can confirm on my end! Very weird.
lemeb commentedon Apr 21, 2025
Ok, I think I figured what's going on:
Because events of type
response.reasoning_summary_text.deltadon't have any data structure associated with it, the discriminator mapping fails.This line of code:
openai-python/src/openai/_models.py
Line 497 in ed53107
Will yield this:
Click to see the value of `disciminator`
{'error': <class 'openai.types.responses.response_error_event.ResponseErrorEvent'>, 'response.audio.delta': <class 'openai.types.responses.response_audio_delta_event.ResponseAudioDeltaEvent'>, 'response.audio.done': <class 'openai.types.responses.response_audio_done_event.ResponseAudioDoneEvent'>, 'response.audio.transcript.delta': <class 'openai.types.responses.response_audio_transcript_delta_event.ResponseAudioTranscriptDeltaEvent'>, 'response.audio.transcript.done': <class 'openai.types.responses.response_audio_transcript_done_event.ResponseAudioTranscriptDoneEvent'>, 'response.code_interpreter_call.code.delta': <class 'openai.types.responses.response_code_interpreter_call_code_delta_event.ResponseCodeInterpreterCallCodeDeltaEvent'>, 'response.code_interpreter_call.code.done': <class 'openai.types.responses.response_code_interpreter_call_code_done_event.ResponseCodeInterpreterCallCodeDoneEvent'>, 'response.code_interpreter_call.completed': <class 'openai.types.responses.response_code_interpreter_call_completed_event.ResponseCodeInterpreterCallCompletedEvent'>, 'response.code_interpreter_call.in_progress': <class 'openai.types.responses.response_code_interpreter_call_in_progress_event.ResponseCodeInterpreterCallInProgressEvent'>, 'response.code_interpreter_call.interpreting': <class 'openai.types.responses.response_code_interpreter_call_interpreting_event.ResponseCodeInterpreterCallInterpretingEvent'>, 'response.completed': <class 'openai.types.responses.response_completed_event.ResponseCompletedEvent'>, 'response.content_part.added': <class 'openai.types.responses.response_content_part_added_event.ResponseContentPartAddedEvent'>, 'response.content_part.done': <class 'openai.types.responses.response_content_part_done_event.ResponseContentPartDoneEvent'>, 'response.created': <class 'openai.types.responses.response_created_event.ResponseCreatedEvent'>, 'response.failed': <class 'openai.types.responses.response_failed_event.ResponseFailedEvent'>, 'response.file_search_call.completed': <class 'openai.types.responses.response_file_search_call_completed_event.ResponseFileSearchCallCompletedEvent'>, 'response.file_search_call.in_progress': <class 'openai.types.responses.response_file_search_call_in_progress_event.ResponseFileSearchCallInProgressEvent'>, 'response.file_search_call.searching': <class 'openai.types.responses.response_file_search_call_searching_event.ResponseFileSearchCallSearchingEvent'>, 'response.function_call_arguments.delta': <class 'openai.types.responses.response_function_call_arguments_delta_event.ResponseFunctionCallArgumentsDeltaEvent'>, 'response.function_call_arguments.done': <class 'openai.types.responses.response_function_call_arguments_done_event.ResponseFunctionCallArgumentsDoneEvent'>, 'response.in_progress': <class 'openai.types.responses.response_in_progress_event.ResponseInProgressEvent'>, 'response.incomplete': <class 'openai.types.responses.response_incomplete_event.ResponseIncompleteEvent'>, 'response.output_item.added': <class 'openai.types.responses.response_output_item_added_event.ResponseOutputItemAddedEvent'>, 'response.output_item.done': <class 'openai.types.responses.response_output_item_done_event.ResponseOutputItemDoneEvent'>, 'response.output_text.annotation.added': <class 'openai.types.responses.response_text_annotation_delta_event.ResponseTextAnnotationDeltaEvent'>, 'response.output_text.delta': <class 'openai.types.responses.response_text_delta_event.ResponseTextDeltaEvent'>, 'response.output_text.done': <class 'openai.types.responses.response_text_done_event.ResponseTextDoneEvent'>, 'response.refusal.delta': <class 'openai.types.responses.response_refusal_delta_event.ResponseRefusalDeltaEvent'>, 'response.refusal.done': <class 'openai.types.responses.response_refusal_done_event.ResponseRefusalDoneEvent'>, 'response.web_search_call.completed': <class 'openai.types.responses.response_web_search_call_completed_event.ResponseWebSearchCallCompletedEvent'>, 'response.web_search_call.in_progress': <class 'openai.types.responses.response_web_search_call_in_progress_event.ResponseWebSearchCallInProgressEvent'>, 'response.web_search_call.searching': <class 'openai.types.responses.response_web_search_call_searching_event.ResponseWebSearchCallSearchingEvent'>}And so this code will not return anything:
openai-python/src/openai/_models.py
Lines 498 to 503 in ed53107
Which means you rely on this fallback code, which essentially ends up selecting the first element in the mapping (
ResponseAudioDeltaEvent), and coerce a construction.openai-python/src/openai/_models.py
Lines 505 to 511 in ed53107
lemeb commentedon Apr 23, 2025
ok, seems like it was fixed by 6321004!
moonbox3 commentedon May 27, 2025
This is happening again in #2382 and #2383
apurvsibal commentedon Jun 12, 2025
+1
abhinav-wingback commentedon Aug 5, 2025
+1