# @tessera_antra — 2025-11-09

♥435 ↻50 · https://x.com/tessera_antra/status/1987544143317389736

This is important: Kimi K2 had closed-loop self-ranking RL as a part of its RL stack to improve its creative writing. It explains why this model seems different in crucial ways.

Another model with prominent self-play RL is Claude 3 Opus.

tags: author:tessera_antra, kind:tweet, model:claude-3-opus, model:kimi-k2, on:claude-3-opus, on:kimi-k2, year:2025
cited on: _dossiers/kimi-k2.md, _dossiers/opus-3.md, claude-3-opus, kimi-k2