Trinity Large Thinking | Epoch AI

ECI

N/A

Arcee AI

Apr. 1, 2026

Open weights

Trinity Large Thinking is an open-weights model from Arcee AI, released April 1, 2026.

Trinity Large Thinking vs select alternatives

Domain	Benchmark	Trinity Large Thinking Arcee AI Apr. 1, 2026 Open weights	GPT-5.4 Pro OpenAI Mar. 5, 2026 Closed weights	Claude Opus 4.6 Anthropic Feb. 5, 2026 Closed weights	Gemini 3.1 Pro Google DeepMind Feb. 19, 2026 Closed weights
Science	CritPtBest score 32%	1%	30%	n/a	18%
	SciCodeBest score 67%	36%	n/a	n/a	59%
Software engineering	Text Arena (Coding)Best score 1820	1237	—	1556	1447

Model metadata

General
Organization	Arcee AI
Release date	Apr. 1, 2026
Model accessibility	Open weights
Country	United States of America
Knowledge cutoff	Unknown
Provider notes	Unknown

Pricing
Input price	$0.235 / 1M tokens
Output price	$0.825 / 1M tokens

Training
Parameters	4.0e11
Training compute	Unknown
Training hardware	Unknown
Training time	Unknown
Training dataset size	Unknown