{"slug": "llm-anthropic-0-30", "title": "llm-anthropic 0.30", "summary": "Simon Willison released llm-anthropic 0.30 on 28th September 2026, adding support for Claude Sonnet 5.5 plus two new commands. The `llm anthropic refresh` command pulls the current Anthropic model list directly from the API so new models no longer require a plugin release, and `llm anthropic count` uses Anthropic's free token counting API to report the tokens a prompt will consume before it is sent.", "body_md": "28th September 2026\n\nIn 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.\n\nI 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.\n\n## Recent articles\n\n- [We're going to need default hard budget caps on pretty much everything](https://simonwillison.net/2026/Oct/3/default-hard-budget-caps/) - 3rd October 2026\n- [OpenAI DevDay 2026 live blog](https://simonwillison.net/2026/Sep/29/openai-devday-2026-live-blog/) - 29th September 2026\n- [2026 in LLMs (so far)](https://simonwillison.net/2026/Sep/27/2026-in-llms-so-far/) - 27th September 2026", "url": "https://wpnews.pro/news/llm-anthropic-0-30", "canonical_source": "https://simonwillison.net/2026/Sep/28/llm-anthropic/", "published_at": "2026-09-28 23:06:21+00:00", "updated_at": "2026-10-06 00:16:47.426322+00:00", "lang": "en", "topics": ["ai-tools", "large-language-models", "developer-tools", "ai-products"], "entities": ["llm-anthropic", "Anthropic", "Claude Sonnet 5.5", "Simon Willison"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/llm-anthropic-0-30", "markdown": "https://wpnews.pro/news/llm-anthropic-0-30.md", "text": "https://wpnews.pro/news/llm-anthropic-0-30.txt", "jsonld": "https://wpnews.pro/news/llm-anthropic-0-30.jsonld"}}