Blog posts

August 12, 2025

LLM Pre-Training and Post-Training 101 with Julien Launay

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See the original video here.

Our CEO Julien Launay joins the SuperDataScience podcast for an in-depth conversation on how large language models are built, from pre-training on massive datasets to the post-training processes that make them useful. Julien walks through the fundamentals of reinforcement learning from human feedback (RLHF) and explains why post-training is where the real value lies for enterprises looking to deploy AI in production.

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