Arcee AI: Trinity Large Preview

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Trinity Large Preview is a 400-billion-parameter sparse Mixture-of-Experts model from Arcee AI, with approximately 13B active parameters per token. It uses 256 experts with 4 active per token, trained on over 17 trillion tokens.

On MMLU it scores 87.2, and it achieved 24.0 on AIME 2025, demonstrating strong mathematical reasoning alongside general knowledge. The 128k context window supports long-document analysis and complex reasoning workflows.

Trinity Large Preview is suited for complex reasoning, math, and coding-adjacent workflows where developers want near-frontier quality through an API at substantially lower cost than dense models of equivalent scale.

Context Window 131K

tokens

Max Output N/A

tokens

Input Cost $0.15

per million tokens

Output Cost $0.45

per million tokens

Release Date Jan 27, 2026

 

Code Example

Add AI to your app with the Puter.js AI API — no API keys or setup required.

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

puter.ai.chat("Explain quantum computing in simple terms").then(response => {
    document.body.innerHTML = response.message.content;
});

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.ai.chat("Explain quantum computing in simple terms").then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

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Frequently Asked Questions

How do I use Trinity Large Preview?

You can access Trinity Large Preview by Arcee AI through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.

Is Trinity Large Preview free?

Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Trinity Large Preview to your app at no cost — your users pay for their own AI usage directly, making it completely free for you as a developer.

What is the pricing for Trinity Large Preview?
Trinity Large Preview costs $0.15 per 1M input tokens and $0.45 per 1M output tokens.
Price per 1M tokens
Input$0.15
Output$0.45
Who created Trinity Large Preview?

Trinity Large Preview was created by Arcee AI and released on Jan 27, 2026.

What is the context window of Trinity Large Preview?

Trinity Large Preview supports a context window of 131K tokens. For reference, that is roughly equivalent to 262 pages of text.

Does it work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Trinity Large Preview API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.

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