@maximelabonne: Such a cool collab, very happy to see this kind of recipe getting open-sourced Train LFM2.5-2.6B on all the harnesses!
Summary
Maximilien Labonne highlights an open-sourced guide to training models with RL inside real agent harnesses like Claude Code, Codex, and OpenCode, enabling training of any model (e.g., LFM2.5-2.6B) on any task set across harnesses.
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Cached at: 10/02/26, 04:34 AM
Such a cool collab, very happy to see this kind of recipe getting open-sourced ❤️
Train LFM2.5-2.6B on all the harnesses!
Adithya S K (@adithya_s_k): 1/ Excited to release The ultimate guide to multi-harness RL
The same model behaves differently in every agent harness. So we built an open way to train any model with RL on any task set, inside the harnesses people actually use, like Claude Code, Codex, and OpenCode, without
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