Meituan: LongCat Flash Chat API

Access Meituan: LongCat Flash Chat from Meituan using Puter.js AI API.

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Model Card

LongCat Flash Chat is a 560B parameter Mixture-of-Experts model by Meituan that dynamically activates only 18-31B parameters per token for efficiency. It supports 128K context length and excels at agentic tasks including multi-step reasoning, tool use, and coding. Released under MIT license in September 2025, it achieves over 100 tokens per second inference speed.

Context Window N/A

tokens

Max Output 131K

tokens

Input Cost $0.2

per million tokens

Output Cost $0.8

per million tokens

Release Date Sep 1, 2025

 

API Usage Example

Add Meituan: LongCat Flash Chat to your app with just a few lines of code.
No API keys, no backend, no configuration required.

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

puter.ai.chat("Explain quantum computing in simple terms", {
    model: "meituan/longcat-flash-chat"
}).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", {
            model: "meituan/longcat-flash-chat"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

Frequently Asked Questions

What is this Meituan: LongCat Flash Chat API about?

The Meituan: LongCat Flash Chat API gives you access to Meituan's chat model through Puter.js. With just a few lines of JavaScript, you can integrate Meituan: LongCat Flash Chat into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created Meituan: LongCat Flash Chat?

Meituan: LongCat Flash Chat was created by Meituan and released on Sep 1, 2025.

What is the max output length of Meituan: LongCat Flash Chat?

Meituan: LongCat Flash Chat can generate up to 131K tokens in a single response.

How much does it cost?
The Meituan: LongCat Flash Chat API is available through the User-Pays Model. As a developer, you can add the Meituan: LongCat Flash Chat API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$0.2
Output$0.8
How do I access the Meituan: LongCat Flash Chat API?

You can access the Meituan: LongCat Flash Chat API with just a few lines of JavaScript — no API keys, no backend, and no configuration required. Include the Puter.js library in your project and start making calls right away. For more details, check out our documentation.

Does the Meituan: LongCat Flash Chat API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Meituan: LongCat Flash Chat 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.

Get started with Puter.js

Add Meituan: LongCat Flash Chat to your app without worrying about API keys or setup.

Read the Docs View Tutorials