DeepSeek: DeepSeek V3.1 API

Access DeepSeek: DeepSeek V3.1 from DeepSeek using Puter.js AI API.

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Model Card

DeepSeek V3.1 is an August 2025 hybrid model that combines the capabilities of V3 and R1, supporting both thinking and non-thinking modes via chat template switching. It features 671B parameters (37B activated), 128K context, and significantly improved tool-calling and agent capabilities.

Context Window N/A

tokens

Max Output 7K

tokens

Input Cost $0.15

per million tokens

Output Cost $0.75

per million tokens

Release Date Aug 21, 2025

 

API Usage Example

Add DeepSeek: DeepSeek V3.1 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: "deepseek/deepseek-chat-v3.1"
}).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: "deepseek/deepseek-chat-v3.1"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

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Frequently Asked Questions

What is this DeepSeek: DeepSeek V3.1 API about?

The DeepSeek: DeepSeek V3.1 API gives you access to DeepSeek's chat model through Puter.js. With just a few lines of JavaScript, you can integrate DeepSeek: DeepSeek V3.1 into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created DeepSeek: DeepSeek V3.1?

DeepSeek: DeepSeek V3.1 was created by DeepSeek and released on Aug 21, 2025.

What is the max output length of DeepSeek: DeepSeek V3.1?

DeepSeek: DeepSeek V3.1 can generate up to 7K tokens in a single response.

How much does it cost?
The DeepSeek: DeepSeek V3.1 API is available through the User-Pays Model. As a developer, you can add the DeepSeek: DeepSeek V3.1 API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$0.15
Output$0.75
How do I access the DeepSeek: DeepSeek V3.1 API?

You can access the DeepSeek: DeepSeek V3.1 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 DeepSeek: DeepSeek V3.1 API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the DeepSeek: DeepSeek V3.1 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 DeepSeek: DeepSeek V3.1 to your app without worrying about API keys or setup.

Read the Docs View Tutorials