[openai] Remove incorrect tool call id from tool call delta (#2210)

naveen-corpusant · DouweM · web-flow · commit 64b64a50a22e · 2025-07-16T13:11:03.000-06:00
Co-authored-by: Douwe Maan &lt;me@douwe.me&gt;
diff --git a/pydantic_ai_slim/pydantic_ai/models/openai.py b/pydantic_ai_slim/pydantic_ai/models/openai.py
@@ -1051,7 +1051,7 @@ async def _get_event_iterator(self) -> AsyncIterator[ModelResponseStreamEvent]:
                     vendor_part_id=chunk.item_id,
                     tool_name=None,
                     args=chunk.delta,
-                    tool_call_id=chunk.item_id,
+                    tool_call_id=None,
                 )
                 if maybe_event is not None:  # pragma: no branch
                     yield maybe_event

Original file line number	Diff line number	Diff line change
`@@ -1051,7 +1051,7 @@ async def _get_event_iterator(self) -> AsyncIterator[ModelResponseStreamEvent]:`
`1051`	`1051`	`vendor_part_id=chunk.item_id,`
`1052`	`1052`	`tool_name=None,`
`1053`	`1053`	`args=chunk.delta,`
`1054`		`- tool_call_id=chunk.item_id,`
	`1054`	`+ tool_call_id=None,`
`1055`	`1055`	`)`
`1056`	`1056`	`if maybe_event is not None: # pragma: no branch`
`1057`	`1057`	`yield maybe_event`