Lilian Weng
Who
Head of Safety at OpenAI (former). Author of Lil’Log — one of the most widely-cited AI research blogs. Known for comprehensive, technically rigorous survey posts on ML topics.
Key Contributions
- Lil’Log (lilianweng.github.io): authoritative technical surveys on RL, transformers, diffusion models, and reasoning
- “Why We Think” (May 2025): definitive survey of test-time compute and chain-of-thought reasoning
- John Schulman acknowledged as a direct contributor/editor of “Why We Think”