Deep Cogito: Cogito v2.1 671B
Access Cogito v2.1 671B from Deep Cogito using Puter.js AI API.
Get Starteddeepcogito/cogito-v2.1-671b
Model Card
Cogito v2.1 671B is a 671-billion-parameter Mixture-of-Experts language model from DeepCogito, with 37 billion parameters active per forward pass.
Built with reinforcement learning via self-play, it excels at instruction following, coding, complex reasoning, multi-turn dialogue, and creative writing. It features a hybrid reasoning mode that produces results comparable to or better than DeepSeek R1 while using roughly 60% fewer reasoning tokens. It supports a 128K context window and 30+ languages.
Benchmark highlights include 98.57% on MATH-500, 77.72% on GPQA Diamond, 84.69% on MMLU Pro, and 89.47% on AIME 2025. A strong open-weight choice for agents, coding assistants, or math-heavy applications needing frontier-level performance with token-efficient reasoning.
Context Window 128K
tokens
Max Output N/A
tokens
Input Cost $1.25
per million tokens
Output Cost $1.25
per million tokens
Release Date Jun 1, 2025
API Usage Example
Add Cogito v2.1 671B to your app with just a few lines of code.
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: "deepcogito/cogito-v2.1-671b"
}).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: "deepcogito/cogito-v2.1-671b"
}).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="deepcogito/cogito-v2.1-671b",
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": "deepcogito/cogito-v2.1-671b",
"messages": [
{"role": "user", "content": "Explain quantum computing in simple terms"}
]
}'
Frequently Asked Questions
You can access Cogito v2.1 671B by Deep Cogito 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 Cogito v2.1 671B 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 | $1.25 |
| Output | $1.25 |
Cogito v2.1 671B was created by Deep Cogito and released on Jun 1, 2025.
Cogito v2.1 671B supports a context window of 128K tokens. For reference, that is roughly equivalent to 256 pages of text.
Yes — the Cogito v2.1 671B 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 Cogito v2.1 671B to your app without worrying about API keys or setup.
Read the Docs View Tutorials