Prompt Clarity Checker

Is your prompt actually clear? Find out in one second.

Paste any AI prompt and get a 1-5 quality score with a breakdown of what is missing — clarity, specificity, audience, format, constraints. Free, instant, no account required.

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4.9 / 5 average ratingFree foreverNo account requiredWorks in ChatGPT, Claude, Gemini & more
The rubric

Five scores that predict answer quality.

Every prompt is graded on five orthogonal dimensions, each on a 1-5 scale. Weak dimensions tell you exactly which part of the prompt to fix.

1–5
Clarity

Are nouns and verbs specific enough for the model to act on without guessing?

1–5
Specificity

How much concrete detail — numbers, names, dates, examples, scope.

1–5
Audience

Is the intended reader named, and can the model infer expertise level?

1–5
Format

Word count, structure, language, code style — the highest-leverage signal.

1–5
Constraints

What to avoid: tone, jargon, fabricated facts, length limits, hedging.

1–5
Risk

Detects ambiguous pronouns, missing context, mixed intents, conflicting requirements.

Why grade prompts

You cannot improve what you do not measure.

Most people iterate on prompts by trial and error — send, read the answer, edit, send again. A clarity checker short-circuits the loop by telling you, before you hit send, which dimensions of the prompt are likely to produce a poor answer.

Catch failure modes upfront

See which dimension is weak before the model wastes a turn answering vaguely.

Calibrated across LLMs

Scores correlate with answer quality on ChatGPT, Claude, Gemini and Perplexity.

Pair with one-click rewrite

Apply the suggested rewrite if you do not want to fix it by hand.

Sub-second feedback

A 120-entry LRU cache returns scores in ~250 ms on repeat phrasings.

Score in action

What a 5/5 prompt looks like.

Before

help me with my presentation → Clarity 2 · Specificity 1 · Audience 1 · Format 1 · Constraints 1

After — enhanced

Rewrite the slide outline below for a 15-minute board update on Q3 revenue. 8 slides max, one chart per slide, lead with the headline number. Audience: 7 board members, 4 of whom are non-operators. No marketing language. → Clarity 5 · Specificity 5 · Audience 5 · Format 5 · Constraints 5

Before

good code review prompt please → Clarity 1 · Specificity 1 · Audience 1 · Format 1 · Constraints 1

After — enhanced

You are a senior TypeScript reviewer. Review the function below for runtime errors, type-safety issues and React 19 anti-patterns. Return a corrected version + a 1-line rationale per change. No style nits, no naming bikeshedding. → Clarity 5 · Specificity 5 · Audience 5 · Format 5 · Constraints 5

Prompt Clarity Checker FAQ

Common questions.

The score blends a classifier that detects missing prompt dimensions (clarity, specificity, audience, format, constraints) with a calibration model trained on prompt-output pairs across multiple LLMs. The result is a single 1-5 score plus a per-dimension breakdown.
Yes, the checker is free forever. You do not need an account to grade prompts on the website or in the extension.
4 and above generally produces strong first-shot answers across major LLMs. 3 is acceptable but often produces generic output. 1-2 prompts will almost always require multiple follow-ups before the answer is useful.
Yes. The checker has a dedicated profile for image prompts (Midjourney, DALL·E, Stable Diffusion, Flux) that grades subject specificity, style, composition and aspect ratio instead of text-prompt dimensions.
No. The checker grades the prompt in-memory and discards the text immediately after returning the score. No retention, no training.

Grade your next prompt before you send it.

Open the free clarity checker and see exactly what your prompt is missing — in under three seconds.

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