Try Qai in the browser.

Type a prompt and watch the free model answer, token by token, with no account. Paste your own key to run the paid tiers. The key stays in this browser and goes straight to the API.

Unlocks the paid tiers. Stored only in this tab and sent only to llm.quickcasa.ai.
Free model: 12 requests a minute, 100 a day per address.
POST /playground/chat stream: true
{
  "model": "qai-hello-world",
  "messages": [{ "role": "user", "content": "..." }],
  "stream": true
}

How this works

Without a key
The page posts your prompt to a keyless endpoint that runs qai-hello-world with a 400 token cap. It is limited to 12 requests a minute and 100 a day per address, the same daily allowance the free model has per key.
With your key
The page calls /v1/chat/completions directly from your browser with your key in the Authorization header, exactly as your own code would. Usage shows up in your dashboard under that key.
What you are seeing
The response is the real server-sent event stream, joined back into text as it arrives. The usage line at the end is the token count the API returned for that call.
Next step
Sign up for a key of your own, then copy the request from the docs.