token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
reasoning model — A model trained to think — generating extended internal reasoning before answering — trading time and tokens for accuracy on hard problems.
Why it matters
A concrete recipe for RL on a 21B reasoning modelA model trained to think — generating extended internal reasoning before answering — trading time and tokens for accuracy on hard problems.Full definition → covers on-policy updates every rollout and SFT/RL data de-overlap to preserve negative trajectories, with the result released in Llama-compatible format for vLLM.