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.
Why it matters
Combines on-policy sampling with per-tokenThe chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.Full definition → teacher supervision, so a small model learns where its reasoning went wrong rather than only that the answer was wrong. It also recovers instruction-following degraded by domain mid-training.