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Fix spurious </think> tags caused by empty string reasoning_content in streaming #7025

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Merged
merged 3 commits into from
Sep 16, 2025
Merged

Fix spurious </think> tags caused by empty string reasoning_content in streaming #7025

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Initial plan
Copilot Sep 16, 2025
d3f9d61
Fix spurious </think> tags caused by empty string reasoning_content
Copilot Sep 16, 2025
ea9fae1
Merge branch 'main' into copilot/fix-7009
ekzhu Sep 16, 2025
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4 changes: 2 additions & 2 deletions python/packages/autogen-ext/src/autogen_ext/models/openai/_openai_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -947,8 +947,8 @@ async def create_stream(
is_reasoning = True
thought_deltas.append(reasoning_content)
yield reasoning_content
elif is_reasoning:
# Exit reasoning mode.
elif reasoning_content is None and is_reasoning:
# Exit reasoning mode only when reasoning_content is None (not when it's an empty string).
reasoning_content = "</think>"
thought_deltas.append(reasoning_content)
is_reasoning = False
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