Mistral API Key Tester
Enter your Mistral API key below and click 'Test Key' to check if it works. This tool will send a request to Mistral asking, "Does this key work?" and return a response with an explanation.
💰 Once your key works, estimate what it will cost: try the Mistral API cost calculator.
🔑 How to Get Your API Key
2. Open API Keys and create a key
3. Copy the key
4. A free tier is available with rate limits
Test Your API Key
🔧 Alternative: cURL Command
You can also test your API key using cURL from your terminal:
curl -sS https://api.mistral.ai/v1/models -H 'Authorization: Bearer {{KEY}}'
💻 How to run this command in your terminal:
- Copy the command above by clicking the "Copy" button
- Open your terminal (Command Prompt on Windows, Terminal on Mac/Linux)
- Paste the command using Ctrl+V (Windows/Linux) or Cmd+V (Mac)
- Press Enter to execute the command
- Check the response - you'll see either a success message or an error explaining what's wrong
💡 Terminal Tips:
- Make sure you have
curlinstalled (it comes pre-installed on Mac and most Linux systems) - On Windows, you may need to install curl or use PowerShell's
Invoke-WebRequestinstead - If you see "command not found", try
curl --versionto check if it's installed
🔧 Common Mistral API key errors
❌ 401
Cause: Invalid or revoked key.
Fix: Create a new key at console.mistral.ai and paste it here.
❌ 429
Cause: Rate limit exceeded (free tier is limited).
Fix: Wait a few seconds and retry, or upgrade your plan.
🔑 API Key Format Guide
Your Mistral API key should follow the correct format:
✅ Valid Format
abc123...(32 chars)
Mistral keys are ~32-character strings with no fixed prefix.
❌ Invalid Format
invalid_key_format
Missing required prefix, wrong length, or incorrect format
How to check if your Mistral API key is working
- Copy your key from console.mistral.ai.
- Paste it into the tester above and click Test Key.
- Green means valid; red shows the exact error and fix.
❓ Frequently Asked Questions
How do I test my Mistral API key?
Simply paste your API key into the form above and click "Test Key". Our tool will make a test request to Mistral to verify your key works.
Is it safe to test my API key here?
Yes! All testing happens in your browser - we never see or store your API keys. The key never leaves your device.
What if my API key test fails?
Check the error message above. Common issues include invalid keys, expired keys, insufficient credits, or rate limiting. Use the troubleshooting guide above for specific solutions.
Can I test multiple API keys?
Yes, you can test as many keys as you need. Each test is independent and secure.
Why do I need to use the terminal?
Some providers use server-side authentication for enhanced security. The terminal method provides direct access to test your API key with full compatibility.
Use Cases
- Quickly verify if your Mistral API key is valid
- Troubleshoot API key-related issues with detailed error messages
- Understand Mistral API response codes and their meanings
- Test API connectivity before integrating AI models into your applications
- Verify model access and rate limits for your account
Supported Mistral Responses
This tool handles all Mistral error codes, including:
- 200 (OK): Key is valid and working correctly
- 201 (Created): Request successful and resource created
- 202 (Accepted): Request accepted and being processed
- 400 (Bad Request): Invalid request format or parameters
- 401 (Unauthorized): The API key is incorrect or invalid
- 403 (Forbidden): API key lacks required permissions
- 404 (Not Found): Requested resource doesn't exist
- 429 (Rate Limit Exceeded): Too many requests in a short period
- 500 (Server Error): Mistral servers are experiencing issues
Refer to the Mistral Documentation for more details.