Mistral Medium 3 | EmpirioLabs AI Docs

Mistral AI · Text Generation

POST /v1/chat/completions

Cost-efficient language model offering strong reasoning and multimodal performance for general production workloads at competitive latency.

This model is deprecated and will be retired on 2026-08-31. After that date, requests to this model will fail. Migrate to a successor model before then.

At a glance

Field	Value
Model id	`mistral-medium-3`
Model release date	2025-05-07
Input modalities	Text, Image
Output modalities	Text
Context window	130K
Weight precision	-
Max output tokens	40,000
Features	vision, function_calling
Native inference	No
New	No
Structured output	JSON Mode
Batch API	35% off list price
Supported endpoints	`POST /v1/chat/completions`, `POST /v1/responses`, `POST /v1/messages`, `POST /v1beta/models/mistral-medium-3:generateContent`
Alternate model ids	`mistralai/mistral-medium-3`
Deprecation date	2026-08-31

Pricing

Charge	Spec	Rate
Per Message	fixed	$0.015
Web Search (Linkup)	per call when invoked	$0.013

Example request

$ curl https://api.empiriolabs.ai/v1/chat/completions \
>   -H 'Authorization: Bearer $EMPIRIOLABS_API_KEY' \
>   -H 'Content-Type: application/json' \
>   -d '{"model": "mistral-medium-3", "messages": [{"role":"user","content":"Hello"}]}'

Parameters

Parameter	Type	Required	Default	Description
`temperature`	number	no	`0.7`	Sampling temperature · Range: 0 – 2
`top_p`	number	no	`1.0`	Nucleus sampling · Range: 0 – 1
`max_tokens`	number	no	`4096`	Max output tokens · Range: 1 – 65536
`frequency_penalty`	number	no	`0`	Penalty for repeated tokens. >0 reduces repetition, <0 encourages it. · Range: -2 – 2
`presence_penalty`	number	no	`0`	Penalty for new vs. seen tokens. >0 encourages new topics, <0 encourages staying on topic. · Range: -2 – 2
`stop`	string	no	-	Comma-separated stop sequences
`response_format`	enum	no	-	Return the output as a valid JSON object (JSON mode). Describe the fields you want in your prompt.
`web_search_linkup`	boolean	no	false	Optional web search powered by Linkup. When enabled, recent web sources are retrieved using your latest user message as the query and provided to the model as additional context. Adds $0.013 per call when invoked on top of the model’s normal token cost. Disabled by default.
`disable_formatting`	boolean	no	false	When enabled, the gateway will not append the “Sources” footer to assistant responses that used Linkup web search. Useful when the model output is piped to another system that expects no decoration.

Machine-readable schema: GET https://api.empiriolabs.ai/v1/models/mistral-medium-3.