llm-anthropic 0.26

Claude 5系列来了！这次新发布最大的亮点是给AI加入了“先思考再回答”的能力，同时让AI学会了自己上网搜资料。以前用AI写文章、找信息，经常得自己准备好材料，现在这项更新让AI能主动查询最新内容，回答问题前还会先在脑子里“打草稿”，答案质量明显提升。通俗来说，旧版AI就像个只会背书的转述者，遇到不懂的问题容易胡编乱造。现在的Claude 5像位严谨的分析师，回答前会先理清思路，遇到信息不足还会自己联网查找，确保给出的答案更靠谱。新加入的多款模型覆盖了不同需求场景，有的侧重响应速度，有的擅长复杂推理，用户可以根据实际需要灵活选择。对普通人而言，这意味着以后用AI查资料、写文档、做翻译会更省心：不用手动复制网页内容给AI“喂材料”，也不用反复追问才得到准确答案。无论是学生写论文、上班族做报告，还是日常用AI解决生活问题，都能明显感受到回答质量和使用便利性的提升。更值得期待的是，这种“思考加联网”的模式很可能成为AI工具的标配，带动更多智能助手升级。

Release: <a href="https://github.com/simonw/llm-anthropic/releases/tag/0.26">llm-anthropic 0.26</a> Includes new features enabled by <a href="https://simonwillison.net/2026/Aug/4/new-release-of-llm/">LLM 0.32</a>: <blockquote> <ul> <li>New models: <code>claude-fable-5</code>, <code>claude-sonnet-5</code>, and <code>claude-opus-5</code>. <a href="https://github.com/simonw/llm-anthropic/issues/75">#75</a>, <a href="https://github.com/simonw/llm-anthropic/issues/76">#76</a></li> <li>Added server-side tools for <code>WebSearch</code>, <code>WebFetch</code>, <code>CodeExecution</code>, and <code>AnthropicMCP</code>, available through LLM's <code>-T</code> interface or Python <code>tools=</code>. The previous <code>-o web_search*</code> options have been removed in favor of <code>-T WebSearch</code>. <a href="https://github.com/simonw/llm-anthropic/issues/79">#79</a></li> <li>Upgraded to <a href="https://llm.datasette.io/en/stable/changelog.html#v0-32">llm>=0.32</a>. Reasoning, tool calls, tool results, and server-side tool results now stream as typed events. Reasoning for <code>llm</code> CLI prompts now displays to standard error unless you pass <code>--hide-reasoning/-R</code>.</li> <li>Simplified extended thinking to <code>thinking</code> and <code>thinking_effort</code> (<code>low</code>, <code>medium</code>, <code>high</code>, <code>xhigh</code>, or <code>max</code>). Claude 5 models think by default; <code>-o thinking 0</code> disables thinking for Sonnet 5 and Opus 5, while Fable 5 always thinks. <code>-R/--hide-reasoning</code> now omits reasoning from responses and logs. The <code>thinking_budget</code>, <code>thinking_display</code>, and <code>thinking_adaptive</code> options have been removed. <a href="https://github.com/simonw/llm-anthropic/issues/80">#80</a></li> </ul> </blockquote> Tags: <a href="https://simonwillison.net/tags/llm">llm</a>, <a href="https://simonwillison.net/tags/anthropic">anthropic</a>, <a href="https://simonwillison.net/tags/claude">claude</a>, <a href="https://simonwillison.net/tags/model-context-protocol">model-context-protocol</a>