Mistral

Route your Mistral AI requests through Metrion using the OpenAI-compatible SDK — with a one-line change.

Use Metrion as a proxy for Mistral AI. Mistral exposes an OpenAI-compatible API, so you can use the standard OpenAI SDK — only the baseURL changes.

Prerequisites

• A Metrion account with your sk-metrion-xxx token (find it on the Integrate page)
• A Mistral API key saved in Metrion’s Integrate page

Setup

Direct HTTP

curl https://www.metrion.dev/api/proxy/mistral/v1/chat/completions \
  -H 'Authorization: Bearer sk-metrion-xxx' \
  -H 'content-type: application/json' \
  -d '{
    "model": "mistral-large-latest",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello, world!"}]
  }'

Supported models

Model ID	Notes
mistral-small-latest	Efficient, low latency
mistral-large-latest	Most capable Mistral model
codestral-latest	Optimised for code generation

Metrion uses prefix matching, so mistral-large-latest resolves to mistral-large pricing automatically.

Pass-through mode

To use your own Mistral key without storing it in Metrion, pass it in Authorization: Bearer and identify your Metrion account with the x-metrion-token header:

TypeScript

import OpenAI from 'openai'

const client = new OpenAI({
  apiKey: process.env.MISTRAL_API_KEY,     // your Mistral key directly
  baseURL: 'https://www.metrion.dev/api/proxy/mistral',
  defaultHeaders: {
    'x-metrion-token': 'sk-metrion-xxx',   // identifies your Metrion account
  },
})

In pass-through mode, your Mistral key is forwarded directly to Mistral’s API and is never stored by Metrion.

Track requests by user or service

Add the optional x-metrion-user header to tag individual requests. These labels appear in your Metrion logs and dashboards.

Use x-metrion-user to break down costs by team member, bot, or application — for example "x-metrion-user": "code-review-bot" or "x-metrion-user": "user-77".

TypeScript

const client = new OpenAI({
  apiKey: 'sk-metrion-xxx',
  baseURL: 'https://www.metrion.dev/api/proxy/mistral',
  defaultHeaders: {
    'x-metrion-user': 'user-77',
  },
})