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llm-anthropic 0.30

simonwillison.net original

llm-anthropic 0.30 — LLM access to models by Anthropic, including the Claude series

In addition to Claude Sonnet 5.5, this release adds the ability to run llm anthropic refresh to refresh the list of Anthropic models directly from their API - which means I don't need to push a new release just to add support for a newly released model.

I also added an llm anthropic count command which can use their free token counting API to return a count of tokens that will be used by any prompt, before you send that prompt.

Posted 28th September 2026 at 11:06 pm