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Free AI prompt grader

Paste a prompt you'd give ChatGPT, Claude, Gemini or any AI assistant. Get a score out of 100, the six habits it does or misses, and the one fix that helps most. Free, no sign-up.

Your prompt

Roast mode (be funny about it) Grade my prompt

We grade the prompt, we don't run it. Please don't paste personal or confidential information.

What the grader checks

• Goal: does it say exactly what to produce?
• Context: does the AI get the background or material it needs?
• Audience: does it say who the answer is for?
• Format: does it set the shape and length of the answer?
• Constraints: does it state limits, must-haves and things to avoid?
• Quality bar: does it give an example or ask the AI to check its work?

These six habits come from the same coaching behind our 2,000+ hands-on exercises, where you practice them on real school and work tasks.

Questions

Is it really free?

Yes. Grade up to 10 prompts a day without signing up.

Does it work for ChatGPT, Claude and Gemini?

Yes. The habits it checks make prompts better in every major AI assistant.

Do you store my prompt?

If you're not signed in, we keep it for 30 days to prevent abuse, then delete it. Signed in, it's in your history until you delete it. We never sell it or use it to train AI. See our privacy policy.

How do I get better at prompting?

Practice. Each AI Exercise is a real 5-minute task: you write the prompt, see the AI's answer, and get coached on the fix.