Nathan Lambert
AI alignment & RLHF
AI researcher, formerly at Hugging Face. Writes the Interconnects newsletter on AI alignment and RLHF.
Recent activity
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Kimi K3: The open-weights escalation
The global implications on the AI ecosystem.
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6 months to live for open models
The most serious test to date of open source AI’s viability is happening right now.
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Latest open artifacts (#22): Zyphra, Cohere, and Poolside are expanding the breadth of the ecosystem
An assessment of the open ecosystem and the motivations behind releasing models
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GLM-5.2 is the step change for open agents
A capability threshold I've been carefully monitoring.
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Banning Open Source AI Would Be A Mistake
This post was originally an op-ed co-authored with Kevin Xu of Interconnected for a general, non-technical audience.
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State of the blog, mid-2026
About 3 years since I started writing weekly.
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Frontier post-training recipe review with Finbarr Timbers
"Interview" #18
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Welcome to the AGI era of AI governance
It's a one-way door and we weren't ready for it.
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Claude Fable 5 and new AI safety fables
One step further into the power politics of frontier AI systems.
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Farewell Ai2
This was my last week at the Allen Institute for AI (Ai2), where I got the great privilege to work on the Olmo models, to grow, to learn, and to have broad lasting impacts.
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