
Gemma 4, Google’s latest open model, is expected to succeed due to its Apache 2.0 license, 31B and 100B sizes, and strong benchmark performance, though its 100B version is still under development. The model’s success hinges on ease of use, licensing, and U.S. market readiness, while challenges in evaluating open models persist due to incomplete benchmarks and unstable tooling. The article cautiously highlights Gemma 4’s potential, noting its strong performance and U.S. market presence, but emphasizes the need for continued research and ecosystem development.
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.
