Claude Fable 5.1 & GPT-6 Astra packages are live

open-api

API

OpenAPI specifications that stay true — generating from code, gating breaking changes in CI, and producing docs and SDKs from one source.

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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