MistralText Generation/v1/ai/chat

Mistral Large 4 API

Access Mistral Large 4 through one API key. Mistral Mistral Frontier Multimodal.

Mistral Large 4 is Mistral AI's frontier multimodal model for reasoning, coding and agentic workloads, taking text and image input. It suits European teams and anyone who wants a strong non-US frontier model for coding, document analysis and multilingual work.

Full Docs Get API Key — Free $5 Credit

No credit card required. Takes 30 seconds.

Mistral Large 4 API pricing

Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated October 23, 2026.

Token type	Price
Input	$2.01 / 1M tokens
Output	$6.17 / 1M tokens
Context window	1.0M tokens

What it costs	Per job	Per 1,000
Chat reply1K input + 500 output tokens	$0.0051	$5.10
RAG answer8K input + 800 output tokens	$0.021	$21.02
Agent step with tools30K input + 2K output tokens	$0.073	$72.64
Long document summary100K input + 2K output tokens	$0.213	$213.34

2,400+

Developers

1.2M+

API calls served

100+

Endpoints

$0.01

Per call

Yep, that's it.

Try it live

Send a message and see Mistral Large 4 respond in real time.

POST/v1/ai/chatmistralai/mistral-large-4-0

Message *

Max Tokens

Maximum tokens in the response.

Stream

Real-time tokens

Hit "Send Request" to see the response

Mistral Large 4 specs

Provider	Mistral
Model ID	mistralai/mistral-large-4-0
Endpoint	/v1/ai/chat
Type	Text Generation
Context window	1.05M tokens
Max output	262K tokens
Reasoning	No
OpenAI-compatible	Yes — /v1/ai/chat/completions

How to get a Mistral Large 4 API key

1
Create a free account
Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.
2
Create an API key
Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.
3
Call Mistral Large 4
Send a request to /v1/ai/chat with the x-api-key header and model "mistralai/mistral-large-4-0".
4
Pay as you go
Usage is billed per request from your balance. Top up any amount; there is no subscription.

Strengths

✓

Mistral's frontier model

The most capable Mistral model on the platform, ahead of Mistral Medium 3.5.

✓

1M token context

Up to 1,048,576 input tokens and 262,144 output tokens per call.

✓

Strong multilingual output

Mistral's models are known for high-quality French, German, Spanish, Italian and other European languages.

✓

Coding and agents

Function calling and structured outputs for tool-using agents and code generation.

Quick start

Copy this snippet and start making calls with Mistral Large 4.

const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "model": "mistralai/mistral-large-4-0",
    "messages": [
      {
        "role": "user",
        "content": "Explain API gateways in 2 sentences."
      }
    ],
    "maxTokens": 256
  }),
});
const { data } = await res.json();
console.log(data.message.content);

Mistral Large 4 vs similar models

Every model below runs on the same API key — switch by changing the model ID.

Model	Provider	Price	Context
Mistral Large 4	Mistral	$2.01 in / $6.17 out per 1M	1.0M
Mistral Small 4	Mistral	$0.22 in / $0.89 out per 1M	262K
Devstral 2	Mistral	$0.59 in / $2.95 out per 1M	262K
Mistral Medium 3.5	Mistral	$2.22 in / $11.08 out per 1M	262K
Nemotron 3 Super	NVIDIA	$0 in / $0 out per 1M	262K
Qwen3.7 Flash	Qwen	$0.04 in / $0.19 out per 1M	1M
Solar Mini 4	Upstage	$0.07 in / $0.30 out per 1M	524K
Nemotron 3.5 Lightning	NVIDIA	$0.10 in / $0.30 out per 1M	262K

Why use Mistral Large 4 through YepAPI?

✓One API key for all models — no separate accounts

✓OpenAI SDK compatible — just change the base URL

✓No monthly minimums — pay per token

✓Switch models with one line of code

✓Full provider passthrough — citations, search results, and all extras included

✓Streaming and non-streaming support on every model

✓Works with Cursor, Claude, LangChain, and any LLM tool

✓Unified billing across all providers

Mistral Large 4 API — pricing, context window & access

Mistral Large 4 is Mistral AI's frontier multimodal model for reasoning, coding and agentic workloads, taking text and image input. It pairs a 1,048,576-token context window with up to 262,144 output tokens per response, at $2.01 per 1M input and $6.17 per 1M output tokens through YepAPI.

Through YepAPI you call Mistral Large 4 on an OpenAI-compatible endpoint with a single key — the same key that reaches GPT-6, Claude, Gemini, Grok and the SEO, SERP and scraping APIs. Input: text, images.

What is Mistral Large 4?

Mistral Large 4 is Mistral AI's frontier multimodal model for reasoning, coding and agentic workloads, taking text and image input. It succeeds Mistral's earlier Large models with a 1M-token context window and much larger output limits. It accepts text, images as input, handles up to 1,048,576 tokens of context and returns up to 262,144 output tokens per call.

Build with Mistral Large 4 via YepAPI

YepAPI serves Mistral Large 4 on the OpenAI-compatible /v1/ai/chat endpoint. Point your base URL at YepAPI, add your key, and set the model string to mistral-large-4-0 (or the full mistralai/mistral-large-4-0). Function calling, structured outputs and reasoning settings pass straight through, and switching to any other model on the platform is a one-string change per request.

Mistral Large 4 API pricing — $2.01 / 1M input, $6.17 / 1M output

Mistral Large 4 costs $2.01 per 1M input tokens and $6.17 per 1M output tokens through YepAPI, pay per token with no minimums. Failed calls are never charged, and every request is itemised in your dashboard API Logs.

Mistral Large 4 use cases

It suits European teams and anyone who wants a strong non-US frontier model for coding, document analysis and multilingual work.

Try Mistral Large 4 free

Every new YepAPI account includes $5 in free credit with no card required — enough to test Mistral Large 4 on your own prompts before committing to paid usage. Create an account, copy your key, and call mistral-large-4-0 right away.

Start generating in 30 seconds

$5 free credit on signup. No credit card required. Pay per call.

Get API Key

What developers say

“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
Marcus T.
SEO Platform Founder

“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
Priya S.
Full-Stack Developer

“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Jake R.
Indie Hacker

Frequently asked questions

Mistral Large 4 costs $2.01 per 1M input tokens and $6.17 per 1M output tokens through YepAPI, billed per request with no monthly fee. For example, a chat reply (1K input + 500 output tokens) costs about $0.0051.

Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for Mistral Large 4 and every other model — no separate Mistral account or waitlist.

New YepAPI accounts in most countries get free signup credit, enough to test Mistral Large 4 without a card. After that you pay per request at the rates above — there is no subscription.

Use "mistralai/mistral-large-4-0" as the model on /v1/ai/chat. The short alias "mistral-large-4-0" also works.

Yes. Point the OpenAI SDK at https://api.yepapi.com/v1/ai with your YepAPI key and set model to "mistralai/mistral-large-4-0". Streaming works the same way, so existing OpenAI code only needs the base URL and key changed.

Mistral Large 4 supports a 1.0M token context window with up to 262K output tokens per request.

Ready to use Mistral Large 4?

$5 free credit on signup. No credit card required. Pay per call.

Get API Key — Free $5 Credit Read Docs

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