simonwillison.net·May 28, 2026
Simon Willison's weblog announced the release of `llm-anthropic 0.25.1`, which includes access to the new Claude Opus 4.8 model and features like a new fast mode option and updated maximum token defaults. Recent articles discuss the improvements of Claude Opus 4.8, the product-market fit of Anthropic and OpenAI, and insights on Pope Leo XIV's encyclical on AI.
For a professional interested in Claude Code and related tools, the release of `llm-anthropic 0.25.1` with the new Claude Opus 4.8 model and its fast mode option is particularly noteworthy. This update allows for more efficient access to Anthropic's models, and the default max_tokens update could significantly impact your AI coding workflows by maximizing output potential.