fix: Remove anthropic dependency when running models on bedrock that don't natively support structured output #3652
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DouweM
requested changes
Dec 8, 2025
| ), | ||
| # Bedrock does not support native structured output | ||
| supports_json_schema_output=False, | ||
| json_schema_transformer=None, |
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BedrockProvider is not the only one that uses anthropic_model_profile, so with this changes the other providers still have the same issue.
I think we should implement this as I suggested in #3625 (comment):
That means moving the
AnthropicJsonSchemaTransformerbit out ofpydantic_ai.profiles.anthropic.anthropic_model_profile, and intoAnthropicProvider.model_profile.
So anthropic_model_profile should not have any json_schema_transformer, and we should add it in AnthropicProvider.model_profile That way, AnthropicJsonSchemaTransformer will only be used with AnthropicProvider, not any other provider.
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Fixes #3625
many thanks to @nataziel for the reporting and suggesting a fix