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Arcee AI: Trinity Large Thinking

arcee-ai/trinity-large-thinking:free

Model weights

Trinity Large Thinking is a powerful open source reasoning model from the team at Arcee AI. It shows strong performance in PinchBench, agentic workloads, and reasoning tasks. Launch video: https://youtu.be/Gc82AXLa0Rg?si=4RLn6WBz33qT--B7Opens in new tab

This model is optimized for agentic workflows and performs best when reasoning is preserved (aka interleaved thinking). Learn how to preserve reasoning in our docs: https://openrouter.ai/docs/guides/best-practices/reasoning-tokens#preserving-reasoningOpens in new tab

Modalities
Price
Free
Context
262K
Released
Apr 1, 2026
ActivityFAQExplore

Activity

Token volume and request traffic to this model over time.

Not currently available through EU in-region routing. In-region routing docs

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Frequently asked questions

Trinity Large Thinking is a powerful open source reasoning model from the team at Arcee AI. It shows strong performance in PinchBench, agentic workloads, and reasoning tasks. Launch video: https://youtu.be/Gc82AXLa0Rg?si=4RLn6WBz33qT--B7Opens in new tab This model is optimized for agentic workflows and performs best when reasoning is preserved (aka interleaved thinking).

Yes. The pricing shown on this page for Trinity Large Thinking is zero, so you are not charged for prompt or completion tokens. Free endpoints are rate limited — see the rate limit docs.

Trinity Large Thinking has a 262,144 token context window.

Trinity Large Thinking was released on April 1, 2026.