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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. $0.15 per million input tokens, $0.60 per million output tokens. 262,144 token context window, maximum output of 262,144 tokens. Higher uptime with 2 providers. Includes independent benchmarks from Artificial Analysis.

View source on OpenRouter Hugging Face
Overview

Model specifications

Context
262,144 tokens
Maximum output
209,715 tokens
Architecture
text+image->text
Tokenizer
Mistral
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$0.15
/M tokens
Output
$0.6
/M tokens
Cache read
$0.015
/M tokens
API

Model configuration

Reasoning

Moderated
No
Default parameters
high
Capabilities
high, none
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

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

Input → Output

Input
textimage
Output
text
Reasoning

No · high · none

API

Supported API parameters

frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_p
Available providers

4 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

Mistral

unknown
Context
262K
Maximum output
210K
Input
$0.150
Output
$0.600
Cache read
$0.015
Cache write
Not provided

Mistral

unknown
Context
262K
Maximum output
210K
Input
$0.150
Output
$0.600
Cache read
$0.015
Cache write
Not provided

Mistral

unknown
Context
262K
Maximum output
210K
Input
$0.165
Output
$0.660
Cache read
$0.016
Cache write
Not provided

Venice

fp8
Context
256K
Maximum output
66K
Input
$0.188
Output
$0.750
Cache read
Not provided
Cache write
Not provided
mistralai

models

All models
mistralai logomistralai

Mistral: Voxtral Small 24B 2507 STT

Voxtral Small 24B 2507 STT is a speech transcription model from Mistral AI. It is suited for transcription, translation, and audio understanding workloads that benefit from its larger model capacity.

Context
Not provided
Input
audio
Output
transcription
Input: $50.00Output: Freeper 1M tokens
View model details →
mistralai logomistralai

Mistral: Voxtral Mini 3B 2507

Voxtral Mini 3B 2507 is a speech and audio understanding model from Mistral AI. It is suited for transcription, translation, and compact audio processing workloads.

Context
Not provided
Input
audio
Output
transcription
Input: $16.67Output: Freeper 1M tokens
View model details →
mistralai logomistralai

Mistral: Voxtral Mini Transcribe

Voxtral Mini Transcribe is Mistral's speech-to-text model, derived from the Voxtral Mini family. It accepts audio input and returns transcribed text via the standard transcription API. Suited for transcribing meetings,...

Context
Not provided
Input
audio
Output
transcription
Input: $3000.00Output: Freeper 1M tokens
View model details →
mistralai logomistralai

Mistral: Mistral Medium 3.5

Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, and complex...

Context
262K
Input
text · image · file
Output
text
Input: $1.50Output: $7.50per 1M tokens
View model details →