Mistral AI: Mistral Small 4

Coming soonQuick Start

Mistral Small 4 is Mistral AI's unified small model, released 2026-03, combining reasoning, vision, and agentic coding in one system. It merges capabilities from the Magistral, Pixtral, and Devstral lines to handle complex analysis, software development, and visual tasks.

This model is not routed on MirAPI yet — prices shown are the official list prices. Create an account to get notified when it goes live.

Modalities
inTextinImageoutText
Price / 1M
$0.15 / $0.60
Context
262K
Knowledge cutoff

Capabilities

ReasoningVisionTool useLong contextPrompt cachingStructured output

Benchmarks

bar = score (0–100) · ▏ median

Scores from vendor reports and public leaderboards. No private evals.

Intelligence Index
General ability
19.7
#65
Coding Index
Code
26.6
#65
Agentic Index
Agentic
4.6
#66
GPQA Diamond
Science QA
76.3
#62
τ-bench (airline)
Agentic tool use
41.3
#86

Showcase

Three fixed prompts, identical for every chat model. Outputs are archived verbatim — copy the prompt to reproduce.

Task prompt · identical for all models
Build a single-file HTML page using three.js from a CDN: a low-poly planet with a tilted ring of ~200 orbiting particles, a soft key light plus rim light, slow auto-rotation, and drag-to-orbit controls. No build tools — one file only.
Archived output
Archive not published yet

Every model will run this exact prompt; the output lands here verbatim, with tokens and per-run cost.

Quick Start

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.mirapi.ai/v1",   # changed
    api_key=os.environ["MIRAPI_API_KEY"],   # changed
)

resp = client.chat.completions.create(
    model="mistralai/mistral-small-2603",
    messages=[{"role": "user", "content": "Hello"}],
)
Wire Mistral Small 4 into your product

1M free tokens to start · no card · OpenAI-compatible, one base_url change

Start free