Claude 3.7 Sonnet API

Access Claude 3.7 Sonnet from Anthropic using Puter.js AI API.

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Model Card

Claude 3.7 Sonnet is Anthropic's first hybrid reasoning model, released February 2025. It combines instant responses with an extended thinking mode where users can control the "thinking budget" to balance speed vs. depth.

Context Window 200K

tokens

Max Output 8K

tokens

Input Cost $3

per million tokens

Output Cost $15

per million tokens

Input text, image, pdf

modalities

Tool Use Yes

 

Knowledge Cutoff Oct 31, 2024

 

Release Date Feb 19, 2025

 

API Usage Example

Add Claude 3.7 Sonnet 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: "anthropic/claude-3-7-sonnet"
}).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: "anthropic/claude-3-7-sonnet"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

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Frequently Asked Questions

What is this Claude 3.7 Sonnet API about?

The Claude 3.7 Sonnet API gives you access to Anthropic's chat model through Puter.js. With just a few lines of JavaScript, you can integrate Claude 3.7 Sonnet into any web app or Node.js project — no API keys, no backend, and no configuration required.

Who created Claude 3.7 Sonnet?

Claude 3.7 Sonnet was created by Anthropic and released on Feb 19, 2025.

What is the context window of Claude 3.7 Sonnet?

Claude 3.7 Sonnet supports a context window of 200K tokens. For reference, that is roughly equivalent to 400 pages of text.

What is the max output length of Claude 3.7 Sonnet?

Claude 3.7 Sonnet can generate up to 8K tokens in a single response.

What is the knowledge cutoff of Claude 3.7 Sonnet?

Claude 3.7 Sonnet has a knowledge cutoff date of Oct 31, 2024. This means the model was trained on data available up to that date.

What types of input can Claude 3.7 Sonnet process?

Claude 3.7 Sonnet accepts the following input types: text, image, pdf. It produces: text.

Does Claude 3.7 Sonnet support tool use (function calling)?

Yes, Claude 3.7 Sonnet supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.

How much does it cost?
The Claude 3.7 Sonnet API is available through the User-Pays Model. As a developer, you can add the Claude 3.7 Sonnet API to your app for free — your users pay for their own AI costs directly.
Price per 1M tokens
Input$3
Output$15
How do I access the Claude 3.7 Sonnet API?

You can access the Claude 3.7 Sonnet 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 Claude 3.7 Sonnet API work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Claude 3.7 Sonnet 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 Claude 3.7 Sonnet to your app without worrying about API keys or setup.

Read the Docs View Tutorials