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Mistral: Mistral Medium 3

mistralai-medium-3

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Mistral Medium 3 costs $0.520 per million input tokens and $2.60 per million output tokens, supports 131K context, and is available through the OpenAI-compatible API.

Mistral Medium 3 delivers frontier performance while being an order of magnitude less expensive. For instance, the model performs at or above 90% of Claude Sonnet 3.7 on benchmarks across the board at a significantly lower cost. On performance, Mistral Medium 3 also surpasses leading open models such as Llama 4 Maverick and enterprise models such as Command A. On pricing, the model beats cost leaders such as DeepSeek v3, both in API and self-deployed systems.

Modalities

Text + Image → Text

Input / output price

$0.520 / $2.60 per 1M

Context

131K · max output 33K

Capabilities

Vision

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$0.520
Output$2.60
Cached input$0.260

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.00364
Per day
$1.82
Per month (30 days)
$54.60

Mistral Medium 3: input $0.52/M · output $2.6/M · cached input $0.26/M

Request with these settings
curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "mistralai-medium-3", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to mistralai-medium-3.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "mistralai-medium-3",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is Mistral Medium 3 billed?
Input is $0.520 and output is $2.60 per million tokens; cached input is $0.260. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
131K tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?
Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.
Mistral Medium 3 API pricing · GeniusRelay