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Google Gemini API Key Tester
Validate your Google Gemini API key, test authentication, and view all available models with their token limits.
Your key is sent directly to Google's API from your browser. It never touches our servers.
Enter your API key and click "Test Key" to validate it
Features
Instant Validation
Tests your key against Google's Gemini API with a real request to confirm it works.
Model Discovery
Lists all Gemini models your key has access to, including input and output token limits.
100% Client-Side
Your API key is sent directly to Google from your browser. It never touches our servers.