Claude Python SDK v1.0 moves to httpx2 and requires Python 3.10

UpdateAug 20, 2026VerifiedAdded Sep 22, 2026

The Python SDK v1.0 switches its HTTP layer to httpx2, an API-compatible httpx fork, requires Python 3.10 or later and removes long-deprecated surface including the legacy Text Completions API. Tracing or mocking libraries that patch httpx need httpx2.alias_httpx().

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Read Anthropic's release notes

https://platform.claude.com/docs/en/release-notes/overview#august-20-2026

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