Arcee Trinity-Large-Thinking: 400B Open Reasoning Agent at $0.90/M Tokens (2026)
Arcee AI's Trinity-Large-Thinking is a 398B sparse MoE model scoring 91.9% on PinchBench — 1.4 points below Claude Opus 4.6 — at $0.90 per million output tokens under Apache 2.0. This guide covers the architecture, benchmarks, vLLM deployment on H200, and when it replaces proprietary frontier models.
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