Anthropic: Claude 3.7 Sonnet (Thinking)
anthropic/claude-3.7-sonnet:thinking
Access Claude 3.7 Sonnet (Thinking) from Anthropic using Puter.js AI API.
Get Started// 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:thinking"
}).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:thinking"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
# pip install openai
from openai import OpenAI
client = OpenAI(
base_url="https://api.puter.com/puterai/openai/v1/",
api_key="YOUR_PUTER_AUTH_TOKEN",
)
response = client.chat.completions.create(
model="anthropic/claude-3.7-sonnet:thinking",
messages=[
{"role": "user", "content": "Explain quantum computing in simple terms"}
],
)
print(response.choices[0].message.content)
curl https://api.puter.com/puterai/openai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_PUTER_AUTH_TOKEN" \
-d '{
"model": "anthropic/claude-3.7-sonnet:thinking",
"messages": [
{"role": "user", "content": "Explain quantum computing in simple terms"}
]
}'
Model Card
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
Model Playground
Try Claude 3.7 Sonnet (Thinking) instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Benchmarks
How Claude 3.7 Sonnet (Thinking) performs on standard evaluations.
| Benchmark | Score |
|---|---|
| GPQA Diamond Graduate-level science Q&A | 77.2% |
| Humanity's Last Exam Cross-domain reasoning | 10.3% |
| LiveCodeBench Recent coding problems | 47.3% |
| SciCode Scientific programming | 40.3% |
| MATH-500 Competition math | 94.7% |
| AIME 2024 Advanced math exam | 48.7% |
| AIME 2025 Advanced math exam | 56.3% |
| IFBench Instruction following | 48.3% |
| LCR Long-context reasoning | 60.7% |
| Terminal-Bench Hard Agentic terminal tasks | 21.2% |
| τ²-Bench Tool use / agents | 54.7% |
Scores sourced from Artificial Analysis.
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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.
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.
Get started with Puter.js
Add Claude 3.7 Sonnet (Thinking) to your app without worrying about API keys or setup.
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