Free Online AI Prompt Score — Test & Improve Your AI Prompts

Get dramatically better results from ChatGPT, Gemini, Claude, and any AI tool by writing stronger prompts. Our free online AI prompt scorer evaluates your prompt on three critical dimensions and gives you instant, specific suggestions to improve it — no sign-up, no cost, completely private.

The 3 Prompt Score Dimensions

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Clarity — /10

Is your instruction clear and direct? Great prompts start with an action verb (Write, Explain, Create, List, Compare) and avoid vague words like "something", "stuff", or "good".

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Detail — /10

Does your prompt include enough context? High-detail prompts specify the audience, purpose, output format (bullet points, table, 300 words), and any relevant background.

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AI Readiness — /10

Will the AI understand this without guessing? AI-ready prompts include a role ("Act as..."), avoid ambiguous pronouns (it, they, this), and set clear constraints.

Why do better prompts matter?

The quality of your AI output is directly determined by the quality of your prompt. A weak prompt like "write something about marketing" gives the AI almost no information to work with — the output will be generic, off-target, or unusable. A strong prompt like "Act as a senior copywriter. Write a 150-word LinkedIn post for a B2B SaaS company targeting HR managers. Tone: professional but conversational. Include one statistic and end with a question." will produce a specific, usable result on the first attempt — saving hours of back-and-forth editing.

What does the prompt scorer check?

Presence of action verbs (Write, Explain, Create, List, Analyse, Compare, Summarise)
Vague or ambiguous words that confuse AI models
Context clues (for, because, about, regarding, audience, purpose, goal)
Output format specification (bullet points, table, paragraphs, word count)
Role or persona instructions ("Act as...", "You are...", "As a...")
Ambiguous pronouns that leave the AI guessing what "it" or "they" refers to
Contradictory instructions (e.g. "short and detailed")
Constraint words (do not, avoid, exclude, must, ensure, only)
Examples or sample output provided

Quick prompt improvement formula

Role + Action + Context + Format + Constraints = a high-scoring AI prompt. Example: "Act as a fitness coach. Write a 7-day beginner workout plan for someone with no gym equipment. Format as a table with Day, Exercises, Duration, and Rest columns. Keep each workout under 30 minutes." — this structure consistently scores 8–10/10 and produces precise, ready-to-use AI output.

Send your prompt to AI in one click

The AI Prompt Score tool helps you refine prompts for better results across leading AI platforms like OpenAI, Google Gemini, and Anthropic.

Once your prompt is ready, use the buttons below to open it in your preferred AI. Each click copies your prompt to the clipboard and opens the selected platform. If the text does not appear automatically, simply paste it using Ctrl+V / ⌘V. You can also use the same prompt in other AI tools to compare responses and get the most useful output.