The Week Fable 5 Comes Back, China Closes the Gap, and Proof Assistants Get an Agent
Anthropic's Fable 5 is back online after 18 days dark. Zhipu's GLM 5.2 landed within 1 point of Opus 4.8 at a fifth of the cost. Mistral solved 587 of 672 Putnam problems with an open model. And three separate teams shipped agents that can read — your browser, your webpage, and your Fitbit. Here's everything.