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🤖 LLM API Tester

Quickly test LLM APIs right from your browser.

How it works

  • Your API key is sent directly from your browser to the provider you choose (e.g. OpenAI, Google).
  • Nothing passes through our server — this page is 100 % client-side.
  • We never store your API key — not in cookies, not in localStorage, nowhere. Reload the page and it's gone.
  • Feel free to inspect the source if you want to verify.

Pre-filled for OpenAI. Edit if you use a proxy or custom endpoint.

Your key is only used for the request below. It is never saved or logged.

Pick a suggestion or type any model ID your key has access to.

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