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fix(pydantic-ai): trace fallback model attempts - #1047
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Abhijeet Prasad (AbhiPrasad) merged 2 commits intoNov 2, 2026
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> 🤖 **This text was AI-generated.** When a Pydantic AI agent retries a failed request with a model instance, the fallback can run without a model span. The agent span can also retain the original model and provider after a different model answers. ```text Before: failed primary span → untraced fallback; agent shows primary After: failed primary span → fallback span; agent shows answering model ``` Wrap models resolved for retry and update agent metadata from the final response. Keep the provider reported by the response when a model ID uses an alias such as `openai-responses`. Closes #1042
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Abhijeet Prasad (AbhiPrasad)
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November 2, 2026 16:41
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When a Pydantic AI agent retries a failed request with a model instance,
the fallback can run without a model span. The agent span can also retain
the original model and provider after a different model answers.
Wrap models resolved for retry and update agent metadata from the final
response. Keep the provider reported by the response when a model ID uses
an alias such as
openai-responses.Closes #1042