Mistral Medium 3
Mistral AIReleased May 7, 2025
Mistral Medium 3 is a high-performance enterprise-grade language model designed to deliver frontier-level capabilities at significantly reduced operational cost. It balances state-of-the-art reasoning and multimodal performance with 8× lower cost...
- Context window
- 131K tokens
- Input
- text, image, file
- Output
- text
- Tokenizer
- Mistral
- Knowledge cutoff
- Mar 31, 2025
- Released
- May 7, 2025
Pricing
Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.
| Per 1M tokens | Provider | + 3% fee | You pay |
|---|---|---|---|
| Input | $0.400 | $0.012 | $0.412 |
| Output | $2.00 | $0.060 | $2.06 |
| Cache read | $0.040 | $0.0012 | $0.041 |
Benchmarks
Design Arena
| Category | Elo | Win rate | Rank |
|---|---|---|---|
| 3Dmodels | 1160 | 54.6% | #56 |
| Codemodels | 1118 | 48.1% | #77 |
| Data vizmodels | 1076 | 45.7% | #81 |
| Game devmodels | 1084 | 45.3% | #81 |
| UI componentsmodels | 1083 | 50% | #76 |
| Websitesmodels | 1122 | 47.7% | #80 |
Head-to-head preference voting. How we filter and rank
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/mistral-medium-3.
curl https://api.openkey.ai/v1/chat/completions \
-H "Authorization: Bearer $OPENKEY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "mistralai/mistral-medium-3",
"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/mistral-medium-3",
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/mistral-medium-3",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);Questions
- How much does Mistral Medium 3 cost via API?
- Through OpenKey, Mistral Medium 3 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 Mistral Medium 3's context window?
- Mistral Medium 3 accepts up to 131K tokens of context.
- Is Mistral Medium 3 OpenAI-compatible?
- Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "mistralai/mistral-medium-3" using any OpenAI SDK — only the base URL and API key change.
- What inputs does Mistral Medium 3 support?
- Mistral Medium 3 accepts text, image, file input and produces text output. Its knowledge cutoff is Mar 31, 2025.
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