Building a Minimal On-Policy Distillation Setup Focused on Training Engineering

bclavie · x · 2026-10-03

Developer barrowjoseph built a "minimal on-policy distillation" setup during a single flight. Unlike most tutorials, the focus is on engineering: spinning up and scaling the training loop rather than the algorithm. He notes that in production you should just use Prime Intellect's prime-rl or Hugging Face's TRL, but the minimal implementation is valuable for seeing how on-policy distillation works under the hood.

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