llm-anthropic 0.25.1
llm-anthropic 0.25.1 adds Claude Opus 4.8, fast mode support, and updated max_tokens defaults.
Simon Willison released llm-anthropic 0.25.1 with support for the new Claude Opus 4.8 model, exposed as claude-opus-4.8. The release adds a -o fast 1 option for Anthropic fast mode, limited to organizations that have the feature enabled. It also changes default max_tokens behavior so each model now defaults to its maximum output instead of 8,192.
Simon Willison's llm-anthropic plugin has released version 0.25.1, a maintenance-oriented update aimed at developers and command-line users, with the focus on letting the LLM tool keep up with Anthropic's latest models and platform capabilities. The new version first adds support for Claude Opus 4.8, with the corresponding model name claude-opus-4.8; users can directly call this new model through llm-anthropic within Simon Willison's LLM CLI ecosystem. The original text also links to Simon's separately written Opus 4.8 notes, and mentions that he used this new version of llm-anthropic to generate "pelicans"-related content, but the article itself does not go into model capability evaluations or quality comparisons.
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Read on Simon Willison's Weblog →Summaries are AI-generated; the original article is authoritative.