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OpenKey

Devstral 2 2512

Mistral AIReleased Dec 9, 2025

Devstral 2 is a state-of-the-art open-source model by Mistral AI specializing in agentic coding. It is a 123B-parameter dense transformer model supporting a 256K context window. Devstral 2 supports exploring...

Try in playground
Context window
262K tokens
Input
text, file
Output
text
Tokenizer
Mistral
Released
Dec 9, 2025

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$0.400$0.012$0.412
Output$2.00$0.060$2.06
Cache read$0.040$0.0012$0.041

Benchmarks

Artificial Analysis

Intelligence index
19.2
Coding index
31.3
Agentic index
10.6

Supported parameters

  • frequency_penalty
  • max_tokens
  • presence_penalty
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model mistralai/devstral-2512.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "mistralai/devstral-2512",
    "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="mistralai/devstral-2512",
    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: "mistralai/devstral-2512",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Devstral 2 2512 cost via API?
Through OpenKey, Devstral 2 2512 costs $0.412 per 1M input tokens and $2.06 per 1M output tokens. That is the provider price ($0.400 / $2.00) plus a flat 3% fee — nothing else.
What is Devstral 2 2512's context window?
Devstral 2 2512 accepts up to 262K tokens of context.
Is Devstral 2 2512 OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "mistralai/devstral-2512" using any OpenAI SDK — only the base URL and API key change.
What inputs does Devstral 2 2512 support?
Devstral 2 2512 accepts text, file input and produces text output.

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