Allen AI: Olmo 3 7B Think

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OLMo 3 7B Think is an efficient reasoning model from the Allen Institute for AI (AI2), purpose-built for multi-step problem solving in math, coding, and general analytical tasks.

Trained using a thinking SFT, thinking DPO, and RLVR pipeline, it generates structured chain-of-thought reasoning traces. On math benchmarks it matches Qwen 3 8B on MATH and comes within a few points on AIME 2024 and 2025. On coding, it leads similarly-sized models on HumanEvalPlus.

Fully open under a permissive license, it is the most capable fully open reasoning option at the 7B scale — ideal for API use cases requiring strong reasoning at a small model footprint.

Context Window N/A

tokens

Max Output 66K

tokens

Input Cost $0.12

per million tokens

Output Cost $0.2

per million tokens

Release Date Oct 31, 2025

 

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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Olmo 3 32B Think

OLMo 3 32B Think is a fully open reasoning model from the Allen Institute for AI (AI2), and the first fully open 32B thinking model to expose intermediate chain-of-thought reasoning traces. Trained on multi-step math, code, and general problem-solving tasks using a thinking SFT, DPO, and RLVR training flow, it is the strongest fully open reasoning model at the 32B scale — narrowing the gap to open-weight models like Qwen 3-32B-Think while trained on 6x fewer tokens. All training data, code, weights, and checkpoints are publicly available under Apache 2.0. Best suited for complex multi-step reasoning and mathematical problem solving via API.

Frequently Asked Questions

How do I use Olmo 3 7B Think?

You can access Olmo 3 7B Think by Allen 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 Olmo 3 7B Think free?

Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Olmo 3 7B Think 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 Olmo 3 7B Think?
Olmo 3 7B Think costs $0.12 per 1M input tokens and $0.2 per 1M output tokens.
Price per 1M tokens
Input$0.12
Output$0.2
Who created Olmo 3 7B Think?

Olmo 3 7B Think was created by Allen AI and released on Oct 31, 2025.

What is the max output length of Olmo 3 7B Think?

Olmo 3 7B Think can generate up to 66K tokens in a single response.

How does Olmo 3 7B Think perform on benchmarks?

Olmo 3 7B Think scores 9.4 on the Artificial Analysis Intelligence Index, outperforming 13% of tracked models. On coding, it scores 7.6 (outperforms 16% of models). On math, it scores 70.7 (outperforms 64% of models).

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

Yes — the Olmo 3 7B Think 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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