Mistral AI: Devstral 2

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Devstral 2 is a 123B parameter dense transformer coding model achieving 72.2% on SWE-bench Verified with 256K context. Released under modified MIT license, it's the state-of-the-art open model for code agents, 7x more cost-efficient than Claude Sonnet.

Context Window 262K

tokens

Max Output 210K

tokens

Input Cost $0.4

per million tokens

Output Cost $2

per million tokens

Input text, file

modalities

Tool Use Yes

Knowledge Cutoff Dec 2025

Release Date Dec 9, 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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Frequently Asked Questions

How do I use Devstral 2?

Devstral 2 is no longer available through Puter.js. Explore other AI models for alternatives.

What is the pricing for Devstral 2?

Devstral 2 costs $0.4 per 1M input tokens and $2 per 1M output tokens.

	Price per 1M tokens
Input	$0.4
Output	$2

Who created Devstral 2?

Devstral 2 was created by Mistral AI and released on Dec 9, 2025.

What is the context window of Devstral 2?

Devstral 2 supports a context window of 262K tokens. For reference, that is roughly equivalent to 524 pages of text.

What is the max output length of Devstral 2?

Devstral 2 can generate up to 210K tokens in a single response.

What is the knowledge cutoff of Devstral 2?

Devstral 2 has a knowledge cutoff date of Dec 2025. This means the model was trained on data available up to that date.

What types of input can Devstral 2 process?

Devstral 2 accepts the following input types: text, file. It produces: text.

Does Devstral 2 support tool use (function calling)?

Yes, Devstral 2 supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.

How does Devstral 2 perform on benchmarks?

Devstral 2 scores 8.6 on the Artificial Analysis Intelligence Index, outperforming 34% of tracked models. On coding, it scores 31.3 (outperforms 37% of models). On math, it scores 36.7 (outperforms 36% of models).

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

Yes — the Devstral 2 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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