Opus 5.5 Becomes the Default, Plus a Prompt Audit Command

Claude Opus 5.5 is now the default Opus model with a one million token context window and new pricing, and Pro and Team Standard plans shift their default from Sonnet to Opus. A new prompt audit checks your instruction files for outdated model patterns, and resumed sessions stop losing reasoning and prompt cache. Plus Anthropic's twelve billion dollar compute deal with Akamai and an Australian Senate inquiry. In this episode: (00:00) Introduction (00:45) Claude Code Updates (03:32) Under the Hood (04:38) In the News Further reading: Coding sessions are longer and use more context. Claude Opus 5.5 is built with that in mind. (Claude Blog) Build plugins for Claude (Claude Blog) Anthropic Strikes $12 Billion AI Computing Deal With Akamai (Bloomberg) Anthropic and OpenAI release cheaper models as price war intensifies (Financial Times) Anthropic's Blacklisting by the Pentagon Was Legal, Federal Judges Rule (New York Times) Heads of OpenAI and Anthropic called to face Senate inquiry after rogue agent incidents (The Guardian) Claude Notes Brief is a weekly podcast covering Claude Code updates and Anthropic news. Subscribe at claudenotes.co.