
I wrote an AI textbook — how long until AI can do it better?
Reflections on AI's writing ability and how AI models get more capable.

Reflections on AI's writing ability and how AI models get more capable.

After a few long years of finding time to document my lessons from training open models, my post-training book is done!

Musings on model alignment, what determines safety, and where we go from here.

Scaling our curation and measurement of the open ecosystem.

Capacity to train strong models is proliferating.

The global implications on the AI ecosystem.

The most serious test to date of open source AI’s viability is happening right now.

An assessment of the open ecosystem and the motivations behind releasing models

A capability threshold I've been carefully monitoring.

This post was originally an op-ed co-authored with Kevin Xu of Interconnected for a general, non-technical audience.

About 3 years since I started writing weekly.


It's a one-way door and we weren't ready for it.

One step further into the power politics of frontier AI systems.

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.

Where marginally higher intelligence drives value, and where it doesn't.

Gemini Flash 3.5, Mythos, open-closed balance, America's open-source surge, emerging power struggles and more.

An eventful month with one flagship release after another