Trinity Large Thinking:

Trinity Large Thinking: Available on OpenRouter.

Try Now

Building Open Intelligence

Open models from an American research lab.

AI works best when people can
build on it freely. Arcee develops open-weight models in the U.S. and releases them for everyone to use.

Why we made Hugging Face the home for everything we build

Partnerships

Why we made Hugging Face the home for everything we build

Trinity is moving to OpenMDW-1.1

Product

Trinity is moving to OpenMDW-1.1

Introducing the Trinity Builders Program

Company

Introducing the Trinity Builders Program

How to Use Hermes Agent with Trinity Large Thinking

Agentic AI

How to Use Hermes Agent with Trinity Large Thinking

Open by design.

Meet Trinity, an open-weight model family that runs anywhere.

  • Trinity Large Thinking

    Frontier reasoning for your hardest problems.

  • Trinity Mini

    Your everyday workhorse with balanced performance and speed.

  • Trinity Nano

    Ultra-lightweight and fast enough to run on-device.

See Models
Llama-4 Landed with a Thud—Here's Why That Matters

Market Intelligence

Llama-4 Landed with a Thud—Here's Why That Matters

Optimizing Arcee Foundation Models on Intel CPUs

Research

Optimizing Arcee Foundation Models on Intel CPUs

OpenRouter introduces Arcee Trinity Large Thinking

Arcee Trains Frontier Open Models for Long-Running Agents, Powered by NVIDIA Blackwell
LatestPress

Arcee Trains Frontier Open Models for Long-Running Agents, Powered by NVIDIA Blackwell

nvidia.com

Read More
Cisco highlights Arcee’s edge AIPressblogs.cisco.com
I can’t help rooting for tiny open source AI model maker ArceePresstechcrunch.com
Arcee's U.S.-made, open source Trinity Large and 10T-checkpoint offer rare look at raw model intelligencePressventurebeat.com

Everything you need to start building.

Ship on our API or download the models and run them yourself. Every model is open-weight, so you can inspect, fine-tune, and go to production on your terms.

Get API KeyContact Sales