OpenAI's post-training lead leaves and joins Anthropic: he helped ship GPT-5, 5.1, 5.2, 5.3-Codex, o3 and o1 and will return to hands-on RL research at Anthropic

You're right to push back.

Taught Claude to talk like a caveman to use 75% less tokens.

Opus tryna be TOO human

Opus 4.7 single handedly proved ijustvibecodedthis.com right.