Nathan Lambert

Post-training researcher at Ai2, writes Interconnects

A LLN - large language Nathan - (RL, RLHF, society, robotics), athlete, yogi, chef Writes http://interconnects.ai At Ai2 via HuggingFace, Berkeley, and normal places

Articles & links

GLM-5.2 is the step change for open agents. Aka GLM-5.2 is the “DeepSeek moment” for agents. We enter a new world where the top end of agentic capabilities are available in open models. www.interconnects.ai/p/glm-52-is-...

interconnects.ai
View on Bluesky · ♥ 94 ↻ 10 ↩ 2 · 3 from the directory shared this · 16d ago

Why I think Anthropic's uneven safety policies with the release of Claude Fable 5 undermine the broader AI community's cohesion and accelerate us to more uncertainty and risk in AI's near-term evolution. www.interconnects.ai/p/claude-fab...

interconnects.ai
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Some ideas for what comes next, May 2026 Gemini Flash 3.5, Mythos, open-closed balance, America's open-source surge, emerging power struggles and more. www.interconnects.ai/p/some-ideas...

interconnects.ai
View on Bluesky · ♥ 28 ↻ 4 ↩ 3 · 3 from the directory shared this · 43d ago

My time at Ai2 / @ai2.bsky.social has come to an end. Ai2 is a wonderful place. The last 2.5+ years building Olmo, Tulu, and other projects will be one of the peaks of my entire career. www.interconnects.ai/p/farewell-ai2

interconnects.ai
View on Bluesky · ♥ 96 ↻ 4 ↩ 4 · 2 from the directory shared this · 36d ago

Welcome to the AGI era of AI governance It's a one-way door and we weren't ready for it. Especially the open-source community celebrating Anthropic's downfall isn't ready for when it's their turn in court. www.interconnects.ai/p/welcome-to...

interconnects.ai
View on Bluesky · ♥ 34 ↻ 2 ↩ 1 · 2 from the directory shared this · 24d ago

All the models, datasets, and even intermediate RL rollouts are released: huggingface.co/collections/... It's a great paper, I'm stoked to have a small part in it!

Tmax - a allenai Collection huggingface.co
AI Weekly's analysis
  • Allen AI released Tmax, an open recipe for terminal agents at 2B, 9B, and 27B parameters, with code, data, and checkpoints public.
  • Tmax-9B hits 27.2% on Terminal-Bench 2.0, called the strongest open-weights result under 10B parameters under official settings.
  • The release bundles TMax-15k, a 14,600-environment RL dataset described as over 2.5 times larger than any prior open terminal-agent dataset.
Read full analysis →
View on Bluesky · ♥ 3 ↻ 0 ↩ 0 · 16d ago

Latest open artifacts (#21): Open model bonanza! Gemma 4, DeepSeek V4, Kimi K2.6, MiMo 2.5, GLM-5.1 & others. On CAISI's V4 assessment. An eventful month with one flagship release after another www.interconnects.ai/p/latest-ope...

interconnects.ai
View on Bluesky · ♥ 13 ↻ 2 ↩ 3 · 2 from the directory shared this · 53d ago

Can closed labs can create margins with very high cost services in the long-term? I say yes, but only in a few niches like high end knowledge work. Meanwhile, the open model economy slowly grows to be bigger and control the long-tail of AI use. www.interconnects.ai/p/open-and-…

interconnects.ai
View on Bluesky · ♥ 16 ↻ 1 ↩ 2 · 2 from the directory shared this · 37d ago

I wrote a little state of the union on the state of Interconnects, how I ended up with a loyal niche audience, and how I’m tweaking operations to ensure the long-term success here! Thanks for the support everyone. 💚

interconnects.ai
View on Bluesky · ♥ 21 ↻ 0 ↩ 1 · 21d ago

www.interconnects.ai/p/artifacts-... Artifacts 22: Zyphra, Cohere, Poolside, and others are expanding the breadth and diversity of the ecosystem. In this issue, a total of 30 models from may/june you should be aware of, from: NVIDIA (3) Cohere (2) Zhipu AI Zyphra (3) Poolside …

interconnects.ai
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Recent commentary

Anthropic's political pressure on distillation is regulatory capture and most of the employees are blind to it under their veil of safety. Or their paycheck helped them buy into safety, is only human nature, I don't even fault them that much.

View on Bluesky · ♥ 48 ↻ 3 ↩ 2 · 11d ago

Being out of SF has lowered my information proximity but with the big upside of giving me space to cultivate my own beliefs and values around ai. We need more people zagging in AI, the monoculture just helps the incumbents win at this point.

View on Bluesky · ♥ 46 ↻ 3 ↩ 1 · 52d ago

It's been a great effort by the early and growing American open-model labs since last June to put the US much more back on the map. We were getting totally owned last June. Nvidia, Ai2, Arcee, Gemma, GPT-OSS and a few others will be seen as saving American open AI.

View on Bluesky · ♥ 31 ↻ 0 ↩ 0 · 34d ago

On-policy distillation is on track to be a lasting method in post-training. The list of areas would be: Instruction tuning (SFT/IFT) RLHF Direct Preference Optimization (DPO et al) RLVR On-policy Distillation (OPD) New classes of methods are rare! Excited to play.

View on Bluesky · ♥ 24 ↻ 0 ↩ 1 · 51d ago

In Nathan Lambert's orbit

Center = Nathan Lambert. Left = members they follow (green edges). Right = members who follow them (blue edges). Top = mutual follows (orange edges, slightly larger). Drag any node to reposition; click to open that profile.