llm-anthropic 0.27 Released: Supports anthropic v1.0.0

Simon Willison · rss · 2026-08-25

Simon Willison released version 0.27 of the Anthropic plugin for LLM, primarily adding compatibility with the recently released anthropic v1.0.0 Python library. This update migrates the underlying HTTP client from httpx to httpx2. The author shared how he used Claude Code with the Fable 5 model to automate the migration process and fix failing tests.

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