llm-anthropic 0.26

**Release:** [llm-anthropic 0.26](https://github.com/simonw/llm-anthropic/releases/tag/0.26)

Includes new features enabled by [LLM 0.32](https://simonwillison.net/2026/Aug/4/new-release-of-llm/):

- New models:
`claude-fable-5`

,`claude-sonnet-5`

, and`claude-opus-5`

.[#75],[#76]- Added server-side tools for

WebSearch

,WebFetch

,CodeExecution

, andAnthropicMCP

, available through LLM's-T

interface or Pythontools= . The previous-o web_search*

options have been removed in favor of-T WebSearch

.[#79]- Upgraded to [llm>=0.32]. Reasoning, tool calls, tool results, and server-side tool results now stream as typed events. Reasoning forllm

CLI prompts now displays to standard error unless you pass--hide-reasoning/-R .- Simplified extended thinking to thinking

andthinking_effort

(low

,medium

,high

,xhigh

, ormax

). 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. Thethinking_budget

,thinking_display

, andthinking_adaptive

options have been removed.[#80]

Tags: [llm](https://simonwillison.net/tags/llm), [anthropic](https://simonwillison.net/tags/anthropic), [claude](https://simonwillison.net/tags/claude), [model-context-protocol](https://simonwillison.net/tags/model-context-protocol)