Explore the fundamentals of Reinforcement Learning from Human Feedback (RLHF) and its application in cutting-edge AI tools like ChatGPT in this comprehensive one-hour talk. Delve into the interconnected machine learning models, covering essential concepts in Natural Language Processing and Reinforcement Learning. Gain insights into the three main components of RLHF: NLP pretraining, supervised fine-tuning, and reward model training. Examine technical details such as input-output pairs, KL divergence, and the PPO algorithm. Discover real-world examples, compare different AI models, and explore open questions in the field. Access additional resources, including a detailed blogpost, an in-depth RL course, and presentation slides. Join speaker Nathan Lambert, a Research Scientist at HuggingFace with a PhD from UC Berkeley, as he shares his expertise and concludes with a Q&A session on the future of RLHF and its impact on AI development.