Mistral API Key Tester

Test any AI or API key in your browser — instantly see if it's valid, and why it isn't. Nothing is stored.

Test your Mistral API key with the models endpoint

Data verified 2026-07-13

Key format & how to get one

Example: abc123...(32 chars) Mistral keys are ~32-character strings with no fixed prefix. 1. Sign in at https://console.mistral.ai 2. Open API Keys and create a key 3. Copy the key 4. A free tier is available with rate limits

How to test

  1. Copy your key from console.mistral.ai.
  2. Paste it into the tester above and click Test Key.
  3. Green means valid; red shows the exact error and fix.

Common errors

CauseFix
Invalid or revoked key.Create a new key at console.mistral.ai and paste it here.
Rate limit exceeded (free tier is limited).Wait a few seconds and retry, or upgrade your plan.

Mistral API docs →

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