Moonshot AI: Kimi Dev 72B

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Kimi Dev 72B is a 72-billion-parameter coding model by Moonshot AI, purpose-built for software engineering tasks like bug fixing, code generation, and unit test creation. It is based on the Qwen 2.5-72B architecture and fine-tuned with large-scale reinforcement learning on real-world GitHub issues and pull requests.

The model achieved 60.4% on SWE-bench Verified, setting a state-of-the-art result among open-source models at the time of its June 2025 release. It uses a two-stage framework — file localization followed by precise code editing — that mirrors how human developers approach issue resolution.

Kimi Dev 72B is a strong pick for automated code repair and test generation workflows where a specialized coding model outperforms general-purpose alternatives.

Context Window N/A

tokens

Max Output 131K

tokens

Input Cost $0.29

per million tokens

Output Cost $1.15

per million tokens

Release Date May 15, 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 Kimi Dev 72B?

You can access Kimi Dev 72B by Moonshot 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 Kimi Dev 72B free?

Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Kimi Dev 72B 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 Kimi Dev 72B?
Kimi Dev 72B costs $0.29 per 1M input tokens and $1.15 per 1M output tokens.
Price per 1M tokens
Input$0.29
Output$1.15
Who created Kimi Dev 72B?

Kimi Dev 72B was created by Moonshot AI and released on May 15, 2025.

What is the max output length of Kimi Dev 72B?

Kimi Dev 72B can generate up to 131K tokens in a single response.

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

Yes — the Kimi Dev 72B 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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