Claude Fable 5.1 & GPT-6 Astra packages are live

pydantic

Backend

Pydantic v2 in practice — model design at the boundary, validators that belong in the model versus the service, settings from the environment,…

Choose your model

Available for 11 model families. The engineering substance is the same in each; the structure, checklist phrasing and constraint ordering are tuned per family.

Claude

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Deepseek

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Gemini

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Glm

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Grok

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Kimi

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Minimax

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Mistral

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Open Ai

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Qwen

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Sarvam Ai

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