llm-anthropic 0.26

Release: https://github.com/simonw/llm-anthropic/releases/tag/0.26">llm-anthropic 0.26

Includes new features enabled by https://simonwillison.net/2026/Aug/4/new-release-of-llm/">LLM 0.32:

• New models: claude-fable-5, claude-sonnet-5, and claude-opus-5. https://github.com/simonw/llm-anthropic/issues/75">#75, https://github.com/simonw/llm-anthropic/issues/76">#76


• Added server-side tools for WebSearch, WebFetch, CodeExecution, and AnthropicMCP, available through LLM's -T interface or Python tools=.

  The previous -o web_search* options have been removed in favor of -T WebSearch. https://github.com/simonw/llm-anthropic/issues/79">#79



• Upgraded to https://llm.datasette.io/en/stable/changelog.html#v0-32">llm>=0.32.

  Reasoning, tool calls, tool results, and server-side tool results now stream as typed events.

  Reasoning for llm CLI prompts now displays to standard error unless you pass --hide-reasoning/-R.



• Simplified extended thinking to thinking and thinking_effort (low, medium, high, xhigh, or max).

  Claude 5 models think by default; -o thinking 0 disables thinking for Sonnet 5 and Opus 5, while Fable 5 always thinks. -R/--hide-reasoning now omits reasoning from responses and logs.

  The thinking_budget, thinking_display, and thinking_adaptive options have been removed. https://github.com/simonw/llm-anthropic/issues/80">#80

Tags: https://simonwillison.net/tags/llm">llm, https://simonwillison.net/tags/anthropic">anthropic, https://simonwillison.net/tags/claude">claude, https://simonwillison.net/tags/model-context-protocol">model-context-protocol