Free LLM API Playground — Test Models in Your Browser

No install, no registration. Paste your API key and start chatting with 100+ free models.

Select a model and paste your API key to start.

How to Test a Free LLM API

  1. Select a model from the dropdown (grouped by provider).
  2. Get a free API key — click the "Get [Provider] key →" link that appears. Most require no credit card.
  3. Paste your API key into the input field. Your key is sent directly to the provider — it's never stored on our servers.
  4. Type a message and press Enter or click Send.

Frequently Asked Questions

Is my API key stored?

No. Your key is held only in your browser and sent directly to the model provider's API. We never log or store it.

Which models are available?

All online models from the models directory — Google Gemini, Groq, NVIDIA NIM, OpenRouter, Mistral, Cohere, Cerebras, and more.

Where do I get a free API key for testing?

Select a model and click the "Get key →" button. This takes you directly to the provider's signup page. Browse all providers at /providers.