Mistral Large 4 API

mistralai/mistral-large-4-0
Mistral Large 4 is a 1 trillion-parameter natively multimodal model with 49 billion active parameters, built as a hybrid instruct-and-reasoning Mixture of Experts. It is served with a 512K context window and up to 256K output tokens.
Context
512K tokens
Input
$1.768 / 1M tokens
Output
$5.434 / 1M tokens
Released
Oct 6, 2026

How to use Mistral Large 4 API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to mistralai/mistral-large-4-0.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "mistralai/mistral-large-4-0",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: "Bearer " + process.env.AIMLAPI_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "mistralai/mistral-large-4-0",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"mistralai/mistral-large-4-0","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Mistral Large 4 API Pricing

TypePrice
Input
$1.768 / 1M tokens
Output
$5.434 / 1M tokens
Cached input
$0.182 / 1M tokens

Billed per token, separately for input and output.

Mistral Large 4 Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
Intelligence
38.4
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceOctober 6, 2026

Figures published by Mistral AI with the Mistral Large 4 announcement (mistral.ai/news/mistral-large-4), retrieved 2026-10-06: DeepSWE v1.1 61.7%, Cybench 93%, AutomationBench 59.9%, Dense 200 visual grounding 42%, B3 Attack Resistance 93.3%, KORA 1.691.

Mistral Large 4 vs other models

ModelInputOutputContextBest for
$1.768 / 1M tokens
$5.434 / 1M tokens
512K tokens
Chat + assistants
$6.877 / 1M tokens
$34.385 / 1M tokens
200K tokens
Chat + assistants
$6.5 / 1M tokens
$39 / 1M tokens
1M tokens
Reasoning + agents
$2.60 / 1M tokens
$13.00 / 1M tokens
TBA
Long-form output and agentic software engineering

Frequently asked questions

Mistral Large 4 is a 1 trillion-parameter natively multimodal model with 49 billion active parameters, built as a hybrid instruct-and-reasoning Mixture of Experts. Mistral describes it as its largest and most capable model to date.

$1.768 per 1M input tokens and $5.434 per 1M output tokens through AI/ML API.

Yes. Mistral describes it as natively multimodal, taking both text and image input and returning text.

With the announcement Mistral reported DeepSWE v1.1 61.7%, Cybench 93% on vulnerability reproduction and patching, AutomationBench 59.9%, Dense 200 visual grounding 42%, B3 Attack Resistance 93.3%, and a KORA score of 1.691. These are the vendor's own figures, not independently reproduced.

Mistral describes the model as open-weight and said at announcement that the weights would drop at the end of the month.

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