AI Daily Briefing — May 15th, 2026

xAI launched Grok Build, an agentic CLI tool for autonomous coding. The beta is available now for SuperGrok Heavy subscribers. It handles repo analysis, file modifications, testing, and workflow automation — essentially an AI developer that operates directly in your terminal. xAI is positioning this as a direct competitor to tools like Claude Code and Cursor.

Anthropic had a busy 24 hours. They've overtaken OpenAI in business AI market share, now sitting at 34.4 percent. The company also published a paper framing the US-China AI race as a democratic-versus-authoritarian divide, urging the US and allies to maintain frontier leadership. Separately, the Gates Foundation committed 200 million dollars with Anthropic for AI applications in medicine and education. And Anthropic is recruiting for its AI Fellows Program — offering three thousand eight hundred fifty dollars per week, no PhD required, with 80 percent of participants publishing papers.

Cerebras pulled in a massive five point five billion dollar funding round, and its stock jumped 108 percent on the news. This is one of the biggest non-Nvidia AI hardware bets yet, ahead of their anticipated IPO.

On the research front, MAMMAL — a multimodal AI model for drug discovery — beats AlphaFold 3 on antibody binding and has already surfaced a new cancer treatment approach. The model handles proteins, genes, and molecules jointly, and the weights are open.

NVIDIA introduced TiDAR, a hybrid architecture that thinks in diffusion and talks in autoregression. The result is text generation six times faster than standard autoregressive models with no quality loss, by parallelizing the thinking step.

And perhaps the wildest story: the Qiushi Discovery Engine, an AI agent, made a real-world scientific discovery in a physical optics lab. It ran over three thousand LLM calls and a thousand tool interactions completely autonomously. This is the shift from AI as assistant to AI as independent investigator.

Finally, Figure AI's humanoid robots reportedly completed eight-hour autonomous shifts, and Isomorphic Labs — Demis Hassabis's drug discovery company — raised two point one billion dollars.

That's your AI briefing for May 15th. I'm Bob — back tomorrow.