fix(streaming): accumulate response.refusal.delta in Responses stream state#3387
Open
yen0304 wants to merge 1 commit into
Open
fix(streaming): accumulate response.refusal.delta in Responses stream state#3387yen0304 wants to merge 1 commit into
yen0304 wants to merge 1 commit into
Conversation
… state ResponseStreamState.accumulate_event handled response.output_text.delta and response.function_call_arguments.delta but not response.refusal.delta. When a model refused a request mid-stream, the refusal text was never accumulated into the snapshot, so the snapshot's refusal content stayed empty while the stream was in progress. The sibling Chat Completions streaming accumulates refusal deltas; this brings the Responses stream state in line. Adds a unit test that drives the accumulator with a sequence of refusal deltas.
nomiveritas
approved these changes
Jun 9, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
ResponseStreamState.accumulate_eventhandlesresponse.output_text.deltaandresponse.function_call_arguments.delta, but had no case forresponse.refusal.delta.refusalcontent stays empty even though delta events are being emitted.chat/_completions.py) accumulates refusal deltas; this brings the Responses stream state in line.Test
response.refusal.deltaevents and asserts the snapshot's refusal content is concatenated.