#claude

A Gemini test gone out of control, Claude Opus 5 as a hacking tool, and the fight over independent evaluators for frontier AI defined the week.

Anthropic's Claude models design protein binders with over 20% hit rate without human intervention, while Stripe enters the AI routing business for $7B and the US pressures 35 countries to pick a camp.

Claude Sonnet 5 replaces Claude 4.6 as the new default model for Free and Pro, while Musk promises Opus-level performance for Grok 4.5 - without showing a single benchmark.

Anthropic closes a $65B round approaching a trillion-dollar valuation – plus GitHub Copilot shock, Claude Opus 4.8, and a papal AI encyclical.

Anthropic's new flagship delivers 3x more production coding power, Cursor eyes a $50B valuation, and a free open-source model beats Opus 4.7 on a MacBook.

Meta considers up to 20% workforce reduction to fund aggressive AI investments; Anthropic brings 1-million-token context at no extra cost; ChatGPT becomes an agent hub for DoorDash, Spotify, and Uber.

Claude Opus 4.6 discovers 500 zero-days, OpenAI launches Frontier for enterprise agents, Big Tech invests $650B in AI infrastructure

Anthropic announced Claude's Mars mission, Meta invests $135 billion in AI, OpenAI seeks $60 billion in fresh capital