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
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.
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.
| Price per 1M tokens | |
|---|---|
| Input | $3 |
| Output | $15 |
Claude 3.7 Sonnet (Thinking) was created by Anthropic and released on Feb 24, 2025.
Claude 3.7 Sonnet (Thinking) supports a context window of 200K tokens. For reference, that is roughly equivalent to 400 pages of text.
Claude 3.7 Sonnet (Thinking) can generate up to 64K tokens in a single response.
Claude 3.7 Sonnet (Thinking) scores 27.1 on the Artificial Analysis Intelligence Index, outperforming 72% of tracked models. On coding, it scores 36.4 (outperforms 49% of models). On math, it scores 56.3 (outperforms 52% of models).
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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