Episode Details

OpenAI paused its largest frontier RL training run after Astra showed signs of crossing its own "Critical" cybersecurity threshold, tightening internal safeguards while outside verification is still pending. Two rival capability claims -- Zhipu's GLM-5.3 cybersecurity benchmark and OpenAI's own tripled ARC-AGI-3 score -- both ran into the same problem: the number that shipped first didn't survive a second look. OpenAI also launched ChatGPT for Teens the same week it expanded ads into Europe, and Cerebras unveiled a new inference chip claiming a 30x speed edge over GPUs.