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Mistral: Codestral 2508

codestral-2508

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Mistral's cutting-edge language model for coding released end of July 2025. Codestral specializes in low-latency, high-frequency tasks such as fill-in-the-middle (FIM), code correction and test generation.

Modalities

Text → Text

Input / output price

$0.390 / $1.17 per 1M

Context

256K · max output 33K

Capabilities

Long contextCoding

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$0.390
Output$1.17
Cached input$0.195

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.00211
Per day
$1.05
Per month (30 days)
$31.59

Codestral 2508: input $0.39/M · output $1.17/M · cached input $0.195/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": "codestral-2508", "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 codestral-2508.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "codestral-2508",
    "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 Codestral 2508 billed?
Input is $0.390 and output is $1.17 per million tokens; cached input is $0.195. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
256K 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.