AI Chatbot Prompt Tester
Paste the prompt you send to a chatbot and find out how strong it is. You get a score out of 100 across 8 quality checks, plus plain tips to fix whatever is missing.
Tip: paste the exact prompt you send to the chatbot.
0 characters · 0 words
Your prompt score
0 / 100
—
Criterion-by-criterion results
Tips to improve
What the 8 checks look for
- Clear goal: the prompt states exactly what the AI should do, with action words like write, list, explain, or summarize.
- Specific role: the AI is given an expert persona, for example "act as a marketing expert".
- Context given: background details such as audience, situation, or purpose are included.
- Constraints listed: limits are set, such as word counts, numbers, or things to avoid.
- Output format specified: the desired structure is named — bullet points, table, numbered list, or headings.
- Examples given: a sample of the expected style or content is included.
- Tone specified: the voice is defined — friendly, professional, casual, or direct.
- Length sensible: the prompt is detailed enough to guide the AI but not overloaded with words.
Frequently asked questions
Paste your prompt and press Test My Prompt. The tool checks it against 8 quality criteria, such as a clear goal, an expert role, context, constraints, output format, examples, tone and sensible length, then shows a total score out of 100 with a pass or fail for each criterion.
Each of the 8 checks shows a pass or fail badge, a short explanation of what was found in your text, and a concrete improvement tip whenever a check fails.
Yes, it is free to use online. The scoring runs entirely in your browser and no signup is needed.
Scores of 80 and above are strong prompts. A score below 60 usually means the prompt is missing several key ingredients like a role, constraints or an output format.