pydantic-ai 2.31.1 · Bedrock structured-output deny for Sonnet 5 / Fable 5

Native structured output is denied for Claude Sonnet 5 and Fable 5 on Bedrock; Gemini models that reject thinking_level=MINIMAL fall back to LOW.⁶

Relevant to: pydantic-ai agents on Bedrock or Gemini with strict schemas