Anthropic: Claude 3.7 Sonnet (Thinking)

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Claude 3.7 Sonnet (Thinking Mode) is Claude 3.7 Sonnet with extended thinking enabled by default. It excels at advanced math, competitive programming, and complex problem-solving by showing visible step-by-step reasoning.

Context Window 200K

tokens

Max Output 64K

tokens

Input Cost $3

per million tokens

Output Cost $15

per million tokens

Release Date Feb 24, 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 Claude 3.7 Sonnet (Thinking)?

You can access Claude 3.7 Sonnet (Thinking) by Anthropic 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 Claude 3.7 Sonnet (Thinking) free?

Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Claude 3.7 Sonnet (Thinking) 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 Claude 3.7 Sonnet (Thinking)?
Claude 3.7 Sonnet (Thinking) costs $3 per 1M input tokens and $15 per 1M output tokens.
Price per 1M tokens
Input$3
Output$15
Who created Claude 3.7 Sonnet (Thinking)?

Claude 3.7 Sonnet (Thinking) was created by Anthropic and released on Feb 24, 2025.

What is the context window of Claude 3.7 Sonnet (Thinking)?

Claude 3.7 Sonnet (Thinking) 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 (Thinking)?

Claude 3.7 Sonnet (Thinking) can generate up to 64K tokens in a single response.

How does Claude 3.7 Sonnet (Thinking) perform on benchmarks?

Claude 3.7 Sonnet (Thinking) scores 34.7 on the Artificial Analysis Intelligence Index, outperforming 76% of tracked models. On coding, it scores 27.6 (outperforms 66% of models). On math, it scores 56.3 (outperforms 52% of models).

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

Yes — the Claude 3.7 Sonnet (Thinking) 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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