Model · Language model
Trinity Large Thinking
Arcee AI's 398-billion-parameter reasoning-optimized release with extended chain-of-thought traces, published as OpenMDW-1.1 open weights with managed API hosting.
- Developer
- Arcee AI
- Distribution
- Downloadable weights · Developer API · Third-party hosting
- Artifact licensing
- Open-licensed artifacts
- License scope
- Reviewed release artifacts and mandatory terms; not an assessment of training code or training data openness.
- Licenses
- OpenMDW License Agreement 1.1
- Boundary
- This record represents the April 2026 Trinity-Large-Thinking release at Hugging Face commit dc6a99b6b74202880e31491a445a94884c97890c (last modified 2026-05-28), the official reasoning successor of the Preview checkpoint. The Preview, Base, and TrueBase checkpoints, and community quantizations remain separate boundaries.
Risk statements
Not yet examined.
Open in the directory → Open official model page ↗
Editorial ratings appear in the directory beside the profile they belong to and are never compared across collections.