Overview
- Karpathy, who announced the move Tuesday on X, started this week on Anthropic's pre-training team under Nick Joseph.
- Anthropic says he will form a group that uses Claude to speed research on pre-training, the large training runs that give the model its core knowledge.
- The hire brings a prominent figure who helped found OpenAI and led Tesla’s Autopilot vision team back into frontier model R&D.
- Anthropic also hired cybersecurity veteran Chris Rohlf for its frontier red team that stress-tests models against severe threats.
- The hires follow recent scaling steps, including higher usage limits and a compute partnership with SpaceX’s Colossus cluster, pointing to a push for faster Claude development.