Implementing RL Algorithms for LLMs | RLHF & Post-training Course, Lecture 4
April 14, 2026
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as posted by the channelWelcome to The RLHF Book & Post-Training Course with Nathan Lambert.
All resources will be available at
Order a copy of the book (physical recommended) on Manning.com
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With specific course resources at (recording links, slides in PDF and native form, etc.)
And code at
Get more information on Nathan at and stay up to date with his work on Interconnects
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This one was on the rougher side (sorry! doing my best), but the slides are updated with the edits I mentioned. I added links to some more resources close to my circles on making RL work in real workflows.
A video I recorded looking at codebases implementing GRPO, DAPO, Dr. GRPO, and other papers
~24min in, talk on scaling RL for Olmo 3
Finbarr Timber's blog post on making RL fast (for Olmo)
Nathan is on…
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