DeepMind's Chief Scientist Quits, Alphabet Drops 4% — Aug 6

Demis Hassabis moves to chair as Jeff Dean leaves Google after 27 years to launch an AI-for-science startup, dropping Alphabet's stock 4% in a day. Meta undercuts Anthropic and OpenAI by up to 21x on price with its new Muse Code agent, while Cloudflare open-sources the agent governance layer that Atlassian's Rovo just got caught skipping. Plus a 4B open model matches frontier retrieval at 1% of the cost, and a Goodhart's Law essay gives AI's benchmark-credibility problem its unifying theory.