Free Tool

AI Prompt Lab

Test and iterate on prompts with GPT-4o Mini. Adjust system prompts, tweak temperature, and compare outputs across runs. Free, no sign-up required.

Prompt

0/2000

0.7
PreciseCreative

Try an example

Powered by GPT-4o Mini. Rate limited to 30 requests/hour.

Run a prompt to see results

Each run appears here so you can compare outputs across different prompts and temperatures.