Trinity Large Thinking

Trinity-Large-Thinking is a reasoning-optimized variant of Arcee AI's Trinity-Large family, a 398B-parameter sparse Mixture-of-Experts model with approximately 13B active parameters per token. Built on Trinity-Large-Base and post-trained with extended chain-of-thought reasoning and agentic RL, it delivers state-of-the-art performance on agentic benchmarks. The model generates explicit reasoning traces wrapped in think blocks before producing its final response. Purpose-built for tool calling, multi-step planning, and agent workflows.