#rlhf

News · 2026-08-10

Lambert drops post-training textbook detailing open model engineering

Nathan Lambert announced the release of his textbook on post-training AI models, condensing years of practical engineering experience. For developer teams, this could mean a critical shift from reading dense academic papers to following battle-tested fine-tuning guides.

News · 2026-07-22

Open models are becoming a geopolitical strategy, not a charity project

Interconnects ties Kimi K3, Qwen 3.8, GLM 5.2 and Xi Jinping’s WAIC speech into a map of the open model fight. The point is that open weights are becoming an industrial and political lever, not just a technical preference.

News · 2026-06-15

Nathan Lambert leaving Ai2 exposes the fragile side of open models

Nathan Lambert announced his departure from the Allen Institute for AI and used it to reflect on work around Olmo. This is not just a personnel note. It is a reminder that open models depend on institutions that must outlast one strong team.

News · 2026-06-09

Claude Fable 5 turns safety into a question of access to the best model

Nathan Lambert reads the Claude Fable 5 release as a dispute over who gets to use a frontier model without routing and filters. The important layer is not only model capability, but the governance system that decides when the user is really talking to the strongest model.

News · 2026-06-01

Open models win on cost, but frontier intelligence still sells at a premium

Nathan Lambert argues that open and closed models are improving on different economic curves. The real question is not open source ideology, but where companies will keep paying a premium for the best model.