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I implemented GRPO from scratch in PyTorch and made a detailed walkthrough

This story is from 2026-08-19. It is preserved in the archive; the latest stories are on the live feed.

Hey guys, I recently made a video where I explain GRPO, implement it from scratch in PyTorch, and run a short training session locally on a consumer GPU. I thought some people here might find it useful, so here you go! Video: https://youtu.be/vVJjUglOURs?is=xsRE97o9\_muctWRF Code: https://github.co…

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  1. 2026-08-19 15:59 · r/reinforcementlearning
    I implemented GRPO from scratch in PyTorch and made a detailed walkthrough

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