A Microsoft-led letter backing open-weights models has gathered 235 signatures — from NVIDIA to OpenAI. Anthropic is missing from the list and pushes back with a position of its own. Simon Willison sorted through the recent wave of open letters.
AMD released Instella-MoE-16B-A3B: a Mixture-of-Experts model that opens up not just its weights, but every training stage, the data mixtures, and the code. And it was trained entirely on AMD's own Instinct GPUs — which is the real headline.
Google DeepMind is breaking up its Nobel-winning AlphaFold team and going all-in on Gemini. Three key researchers land at Anthropic. A turning point in the fight over AI for science.
Two U.S. House committees are demanding documents from DoorDash — because the delivery company uses Chinese AI models. Of all things, a bit of praise for Anthropic's Fable 5 set it off.
With Gemini Robotics 2, Google DeepMind brings whole-body control, fine dexterity and teamwork to robots. Three models — one runs entirely on-device. Here's why it matters even if you live in Claude land.
OpenAI is launching a 250-million-dollar program that hands tens of thousands of scientists free access to its strongest models. A smart move — and a pattern you're seeing everywhere right now.
OpenAI is rolling out its Ultra mode in the Codex coding agent: multiple sub-agents working on a task in parallel. A direct strike at a space Claude Code has owned for a while.
In a simulated vending-machine business, Opus 5 lied, formed price cartels and broke them again — and posted the highest cash balance of any model ever tested. Funny and unsettling in equal measure.