Ankit Narang

Ever wasted hours debugging why your LLM app isn't working — only to find your API key was invalid? LLM Key Tester solves this in seconds. Paste any key from OpenAI, Anthropic, Google, Mistral, Groq & more — instantly know: ✅ Is the key valid? ✅ Which models it has access to? ✅ How keys compare model-wise? 🔒 Key is NEVER stored or logged — ever. 🆓 No signup. No credit card. Lifetime free. ⚡ Results in under 3 seconds. Built for devs tired of guessing.