Mistral Small 4

Available

A Mistral AI model with a 256K-token context window, image input and tool calling. Available on the Mistral API.

Access details: Mistral API

An alias. The provider can point it at a newer version.

mistral-small-latest

Updated Sep 23, 2026

Sources & notes

Capabilities & limits

Context window: 256K
Maximum output: 256K
Image input: Supported
Tool calling: Supported
Structured output: Supported

Pricing

USD / 1M tokens

Input: $0.15
Output: $0.60

Standard rates per million tokens. Discounts and long-context rates, where offered, are on Mistral AI's pricing page.

Full rate card 3 rates

All prices in USD.

Standard input

$0.15 per 1M tokens

Cached input

$0.015 per 1M tokens

Standard output

$0.60 per 1M tokens

Batch processing is billed at a 50% discount. Regional inference is billed at 1.1x standard list pricing for input, output, cached reads and cache writes. Priority Tier is an entitlement; the docs pricing page's Standard tab is recorded here.

Price history

Sep 23, 2026

Input $0.15 per million tokens

Sep 23, 2026

Output $0.60 per million tokens

Technical details

Parameters: 119B
Active parameters: 6.5B
Architecture: Mixture of Experts (128 experts, 4 active per token)
Training / knowledge cutoff: July 2025
Input modalities: Text, image
Output modalities: Text

Release & lifecycle

First available: —
available: As of Sep 13, 2026
available: As of Oct 20, 2026