Mistralai/operational

Mistral: Mistral Small 4

Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from...

Input / output per 1M

$0.15/$0.60

Get an API key

function-callingreasoningvisionopen weights

262K

Context window

tokens

210K

Max output

tokens per reply

70ms

Time to first token

p50, EU region

$0.60

Output price

per 1M tokens

Fit

Where this model earns its place

function calling

Tool use and structured output — dependable JSON for agent loops, RAG pipelines, and workflow automation.

reasoning

Multi-step reasoning — planning, quantitative analysis, and problems that need deliberation rather than recall.

vision

Image input — screenshots, scanned documents, charts, and photographed forms, without a separate OCR step.

Data handling

Requests are processed in the EU. Prompts are not used for training, and logs follow the retention period in your contract — zero-retention is available on request.

Specifications

Model

Model ID: mistralai/mistral-small-2603
Provider: Mistralai
Context length: 262K
Max output: 210K
Modality: text + image
Licence: Open Weight

Commercial

Input: $0.15
Output: $0.60
Cached input: $0.01
Deployment: serverless
Availability: operational
Last updated: 2026-10-26

Cost

What a month actually costs

Workload	Input tokens	Output tokens	Monthly cost
Prototype	1.0M	250K	$0.30
Production	50.0M	12.0M	$14.70
At scale	500.0M	120.0M	$147.00

Illustrative volumes at list price, excluding cached-input discounts and any committed-use agreement. Your invoice shows the same rates, itemised per key.

Cheaper by caching

Repeated prompts — system instructions, retrieved context, few-shot examples — are billed at the cached-input rate where the model supports it. On long system prompts this is typically the largest single line-item saving.

API

Same SDK, different base URL

cURL

curl https://api.itciphtech.com/v1/chat/completions \
  -H "Authorization: Bearer $CIPHER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "mistralai/mistral-small-2603",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

TypeScript

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.itciphtech.com/v1",
  apiKey: process.env.CIPHER_API_KEY,
});

const res = await client.chat.completions.create({
  model: "mistralai/mistral-small-2603",
  messages: [{ role: "user", content: "Hello!" }],
});

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