Claude quietly removed full thinking traces feature, according to user reports and researcher Ethan Mollick.

Claude Opus 5 released with Fast Mode (2.5x speed) at Opus 4.8 pricing, saving 50% on tokens

Solved a string theory problem stalled for six months using SymPy verification

Claude Opus 4.8 beats Gemini Pro 5 by 11 points on Fable 5 benchmark

Claude Fable 5 returned to Claude Code after a two-week export-control shutdown

Anthropic voluntarily suspended Claude Fable 5 under a Washington directive blocking foreign users.

Claude Opus 4.8 achieves 89% task completion and 2.5% harm rate on WorkBench, a dramatic improvement over GPT-4.

Claude Opus 4.8 adds dynamic workflows for agentic coding

Claude Opus 4.8 launched with dynamic workflows for Claude Code, enabling multi-step agentic coding.