Arcee AI

Trinity Large Thinking

A sparse reasoning model for planning, coding, tools, and long-horizon agents.

open-weightsreasoningagentscoding

Model record

Trinity Large Thinking model overview

Trinity Large Thinking is a open weights model from Arcee AI. It was released on April 1, 2026. Its strongest case is 512k context, while buyers should account for input price unavailable.

Trinity Large Thinking benchmark snapshot

EvaluationReported scoreWhat it probes
MMLU-ProNot reportedBroad knowledge and multi-step reasoning
GPQA DiamondNot reportedGraduate-level science reasoning
SWE-bench VerifiedNot reportedVerified real-repository issue resolution
LiveCodeBenchNot reportedContamination-aware competitive programming
SWE-Bench ProNot reportedLonger, harder professional software tasks
Artificial Analysis Intelligence IndexNot reportedComposite third-party capability index; version matters

Scores are percentages reported by model creators or benchmark maintainers under varying settings. A blank is preferable to an inferred result. See our methodology.

Trinity Large Thinking strengths

  • 512K context
  • Open weights
  • Tool use

Trinity Large Thinking limitations

  • Input price unavailable
  • License changed after launch
Editorial take: Benchmark rank should narrow a shortlist, not close a purchase. Run a private evaluation with representative prompts, failure cases, latency targets, and total token costs.

Source record

Specifications and scores are linked to the best source located during review. Provider-reported results are not presented as third-party lab reproductions.

Source limitation: Official model card: https://huggingface.co/arcee-ai/Trinity-Large-Thinking. License update: https://arcee.ai/blog/trinity-is-moving-to-openmdw-1-1

Read Arcee Trinity Large Thinking announcement