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Arcee AI offers Trinity Large Thinking

Name: Trinity Large Thinking
Brand: Arcee AI

ProductCurrently Offered

Trinity Large Thinking is Arcee AI's open-source reasoning model for long-horizon agents and tool use.

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Arcee AI offers Trinity Large Thinking

ProductCurrently Offered

Trinity Large Thinking is Arcee AI's open-source reasoning model for long-horizon agents and tool use.

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Trinity Large Thinking is an open-source reasoning model released by Arcee AI on April 1, 2026, under an Apache 2.0 license. Built as a sparse mixture-of-experts architecture with 398 billion total parameters and roughly 13 billion active per token, it offers a 512K-token context window and generates explicit chain-of-thought reasoning before responding. It was pretrained on 17 trillion tokens with compute partner Prime Intellect and data partner Datology.

The model targets long-horizon agents and multi-turn tool calling, scoring 96.3% on AIME25, 98.2% on LiveCodeBench, and 63.2% on SWE-bench Verified. It is available via Arcee AI's API at $0.90 per million output tokens and on OpenRouter, with weights published on Hugging Face as part of Arcee's permissive open-weights mission.

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Tags: AI

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Frontier Open-Weight Language Models Reflection AI
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Arcee AI›Arcee AI› offers Trinity Large Thinking

Arcee AI›Arcee AI› offers Trinity Large Thinking

Trinity Large Thinking - Similar Products & Services

Trinity Large Thinking - Classification

Trinity Large Thinking - Similar Products & Services

Arcee AI offers Trinity Large Thinking

Arcee AI offers Trinity Large Thinking