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Cogito v2.1 671B

Deep CogitoReleased Nov 13, 2025

Cogito v2.1 671B MoE represents one of the strongest open models globally, matching performance of frontier closed and open models. This model is trained using self play with reinforcement learning...

Try in playground
Context window
128K tokens
Input
text
Output
text
Tokenizer
Other
Released
Nov 13, 2025
Reasoning
optional

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
Input$1.25$0.037$1.29
Output$1.25$0.037$1.29

Supported parameters

  • frequency_penalty
  • include_reasoning
  • logit_bias
  • max_tokens
  • min_p
  • presence_penalty
  • reasoning
  • repetition_penalty
  • response_format
  • stop
  • structured_outputs
  • temperature
  • top_k
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model deepcogito/cogito-v2.1-671b.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepcogito/cogito-v2.1-671b",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="deepcogito/cogito-v2.1-671b",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "deepcogito/cogito-v2.1-671b",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Cogito v2.1 671B cost via API?
Through OpenKey, Cogito v2.1 671B costs $1.29 per 1M input tokens and $1.29 per 1M output tokens. That is the provider price ($1.25 / $1.25) plus a flat 3% fee — nothing else.
What is Cogito v2.1 671B's context window?
Cogito v2.1 671B accepts up to 128K tokens of context.
Is Cogito v2.1 671B OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "deepcogito/cogito-v2.1-671b" using any OpenAI SDK — only the base URL and API key change.
What inputs does Cogito v2.1 671B support?
Cogito v2.1 671B accepts text input and produces text output.