Andrej Karpathy joins Anthropic to work on pre-training

andrej karpathy, known for his work at openai and tesla, joined anthropic this week to work on core model pre-training. he will build a team dedicated to using claude to accelerate the expensive, compute-intensive pre-training process. karpathy emphasized his excitement to return to hands-on r&d at the frontier of llms while maintaining his long-term passion for education. additionally, anthropic hired cybersecurity veteran chris rohlfe to stress-test models against severe threats.