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Arcee AI: 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...

Source-linked Weight access not listed
API data Report
Input modalitiesT
Output modalitiesT
Input price$0.22/1M tokens
Output price$0.85/1M tokens
Context window262.144K
Max output262.144K
Overview

Capabilities and specifications

? Reasoning Unknown
? Tool calling Unknown
? Structured output Unknown
? Attachments Unknown
× Vision input No
? Open weights Unknown
Creator
Arcee Ai
Model family
Not documented
Knowledge cutoff
Not documented
License
Not documented
Release date
Not documented
Model ID
arcee-ai/trinity-large-thinking
Inference availability

Provider pricing and availability

Provider-specific identifiers, limits, and prices per million tokens.

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Serving quality

Performance and reliability

Observed serving measurements stay separate from model specifications and are never estimated from price or model size.

Throughput Not reported

Generation speed; higher is faster.

Latency / TTFT Not reported

Time until the first output token arrives.

Uptime Not reported

Successful requests over a measured period.

Performance varies by inference provider, region, and load. Provider-level measurements appear only when a source reports them.

Published evaluations

Benchmarks

Raw results remain attached to their original source and version.

Benchmark registry
Agentic Index - Unversioned - indexTop 8 reported models
Claude Opus 5
55.3
GPT-5.6 Sol
54.0
Anthropic: Claude Fable 5 (batch)
52.8
Claude Fable 5
52.8
Kimi K3
50.1
GPT-5.6 Terra
47.4
Anthropic: Claude Opus 4.8 (batch)
47.2
Arcee AI: Trinity Large Thinking
3.7
Coding Index - Unversioned - indexTop 8 reported models
Claude Opus 5
78.0
GPT-5.6 Sol
77.4
GPT-5.6 Terra
76.7
Anthropic: Claude Fable 5 (batch)
76.5
Claude Fable 5
76.5
Kimi K3
76.2
OpenAI: GPT-5.5 (batch)
74.9
Arcee AI: Trinity Large Thinking
25.8
Design Arena: 3d - Unversioned - eloTop 8 reported models
Kimi K3
1456.0
Claude Opus 5
1384.0
Anthropic: Claude Fable 5 (batch)
1373.0
Claude Fable 5
1373.0
Z.ai: GLM 5.2
1366.0
Z.ai: GLM 5.1
1336.0
Anthropic: Claude Opus 4.6 (batch)
1332.0
Arcee AI: Trinity Large Thinking
1139.0
Design Arena: asciiart - Unversioned - eloTop 8 reported models
Anthropic: Claude Fable 5 (batch)
1364.0
Claude Fable 5
1364.0
Anthropic: Claude Opus 4.7 (batch)
1324.0
Anthropic: Claude Opus 4.7
1324.0
Muse Spark 1.1
1322.0
Google: Gemini 3.1 Pro Preview (batch)
1309.0
Gemini 3.1 Pro Preview
1309.0
Arcee AI: Trinity Large Thinking
1079.0
Design Arena: codecategories - Unversioned - eloTop 8 reported models
Kimi K3
1418.0
Claude Opus 5
1358.0
Z.ai: GLM 5.2
1346.0
Anthropic: Claude Fable 5 (batch)
1340.0
Claude Fable 5
1340.0
Anthropic: Claude Opus 4.6 (batch)
1324.0
Anthropic: Claude Opus 4.6
1324.0
Arcee AI: Trinity Large Thinking
1148.0
Design Arena: dataviz - Unversioned - eloTop 8 reported models
Kimi K3
1382.0
Claude Opus 5
1378.0
Z.ai: GLM 5.1
1366.0
Google: Gemini 3.6 Flash (batch)
1350.0
Gemini 3.6 Flash
1350.0
Anthropic: Claude Fable 5 (batch)
1349.0
Claude Fable 5
1349.0
Arcee AI: Trinity Large Thinking
1127.0
Design Arena: gamedev - Unversioned - eloTop 8 reported models
Anthropic: Claude Fable 5 (batch)
1393.0
Claude Fable 5
1393.0
Z.ai: GLM 5.2
1358.0
Anthropic: Claude Sonnet 5 (batch)
1352.0
Claude Sonnet 5
1352.0
OpenAI: GPT-5.5 (batch)
1345.0
GPT-5.5
1345.0
Arcee AI: Trinity Large Thinking
1135.0
Design Arena: svg - Unversioned - eloTop 8 reported models
Anthropic: Claude Fable 5 (batch)
1351.0
Claude Fable 5
1351.0
Google: Gemini 3.1 Pro Preview (batch)
1335.0
Gemini 3.1 Pro Preview
1335.0
Google: Gemini 3.5 Flash (batch)
1296.0
Gemini 3.5 Flash
1296.0
Anthropic: Claude Opus 4.6 (batch)
1276.0
Arcee AI: Trinity Large Thinking
1064.0
Design Arena: uicomponent - Unversioned - eloTop 8 reported models
Kimi K3
1413.0
Claude Opus 5
1406.0
Anthropic: Claude Fable 5 (batch)
1350.0
Claude Fable 5
1350.0
Anthropic: Claude Opus 4.7 (batch)
1339.0
Anthropic: Claude Opus 4.7
1339.0
Z.ai: GLM 5.2
1334.0
Arcee AI: Trinity Large Thinking
1081.0
Design Arena: website - Unversioned - eloTop 8 reported models
Kimi K3
1375.0
Claude Opus 5
1343.0
Z.ai: GLM 5.2
1340.0
Anthropic: Claude Fable 5 (batch)
1323.0
Claude Fable 5
1323.0
xAI: Grok 4.5
1323.0
Google: Gemini 3.6 Flash (batch)
1322.0
Arcee AI: Trinity Large Thinking
1161.0
Intelligence Index - Unversioned - indexTop 8 reported models
Claude Opus 5
60.7
Anthropic: Claude Fable 5 (batch)
59.9
Claude Fable 5
59.9
GPT-5.6 Sol
58.9
Kimi K3
57.1
Anthropic: Claude Opus 4.8 (batch)
55.7
Anthropic: Claude Opus 4.8
55.7
Arcee AI: Trinity Large Thinking
18.2
Catalog activity

Recent record changes

Detected changes from successful source imports.

Full change log
Max Output Tokens80000 → 262144
Price Completion0.7999999999999999 → 0.85
Price Prompt0.25 → 0.22
Public API

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API documentation
Endpoint
GET https://www.modelbench.lol/api/v1/models/arcee-ai/trinity-large-thinking
curl
curl "https://www.modelbench.lol/api/v1/models/arcee-ai/trinity-large-thinking"