We show that the Minesweeper game is PP-hard, when the object is to locate all mines with the highest probability. When the probability of locating all mines may be infinitesimal, the Minesweeper game...

California’s pro-repro rights governor rejects a key protection that 18 blue states have enshrined into law.

GLM-5.3 can autonomously build end-to-end cyber exploits, but unlike other frontier models, it was released without meaningful safeguards to limit misuse.

Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.