1
Trinity large: An open 400B sparse MoE model
A deep dive into the open weight Trinity Large model, covering architecture, sparsity, training at scale, and why we shipped Preview, Base, and TrueBase checkpoints.
Arcee is an open intelligence lab based in the U.S. Our models are open-weight, transparent, customizable, and built to run wherever you need them.
Visit arcee.ai → On Hacker News Jan 2026 – Jan 2026
A deep dive into the open weight Trinity Large model, covering architecture, sparsity, training at scale, and why we shipped Preview, Base, and TrueBase checkpoints.