Trinity Large Thinking
ModelOpen sourceActiveby Arcee AI · family “trinity-large-thinking”
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--B7... (description from the OpenRouter listing)
in: textout: textReasoningTool use
Epoch Capabilities Index
Not scored by Epoch AI
Released
1 Apr 2026
Context window
262K tokens
Max output
80K tokens
Input $ / 1M tokens
$0.25
Output $ / 1M tokens
$0.80
Cached input $ / 1M
$0.060
Each benchmark shown separately with its own source
Benchmark results (1)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| Surface Evolver Bench | science | 15.6% | 16% | — | — | External ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
6 observations (OpenRouter listing + Internet Archive snapshots). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Open release6mo agoArcee AI releases Trinity Large ThinkingOpenRouter models API