Organization
Arcee AI
Model developer · Research lab · Inference provider · San Francisco, California
Arcee AI trains and publishes the Trinity family of open-weight language models, ranging from an on-device Nano model to a roughly 400-billion-parameter mixture-of-experts model. It also runs a hosted, OpenAI-compatible API.27
Key facts
- Ownership
- Privately held
- Legal form
- Unknown
- Founded
- Unknown
- Sectors
- Open models, Research, Enterprise
What is and isn’t public
Arcee publishes Trinity model weights on Hugging Face. Trinity Nano Preview and Trinity Mini were announced under Apache 2.0; in May 2026 Arcee moved the family, including earlier releases, to the OpenMDW-1.1 license, which the Hugging Face model cards now list. A technical report describes the pretraining data; this catalog found no public release of the data itself. The hosted API is a paid service.29101112138
Products
Hosted model products
Labeled Closed product/API — this describes how a documented product is delivered (hosted access). It is not an open artifact and says nothing about other releases by the same organization.
| Product | Kind | Documented delivery and access | Reviewed |
|---|---|---|---|
| Arcee Platform API (external site: docs.arcee.ai) | Hosted model API | Paid, per-token API with OpenAI-compatible endpoints, used with an API key from the Arcee Platform. The pricing page lists Trinity-Large-Thinking alongside models from other developers.78 | Sep 29, 2026 |
| Arcee chat (external site: chat.arcee.ai) | Assistant app | Web chat interface for Trinity models, described on Arcee's Trinity page as free to use.2 | Sep 29, 2026 |
Related open artifacts
Model families
- TrinityModel family
Model releases
- Trinity MiniModel releaseAvailability: PublicModel-disclosure tier (USASI rubric v0.1): Open-weight
- Trinity-Large-ThinkingModel releaseAvailability: PublicModel-disclosure tier (USASI rubric v0.1): Open-weight
U.S. eligibility
Eligible · basis: U.S. headquarters
Arcee's September 2026 press release describes Arcee AI as a U.S. artificial intelligence company and carries a San Francisco dateline, its about page calls it a U.S. model lab, and SiliconANGLE reports it as San Francisco-based. Its site terms name Arcee AI, Inc., apply Delaware law, and set venue in courts in Miami, Florida. All documented locations are in the United States.5641
Sources
This listing is not an endorsement or a federal approval.