AI Prompt Evaluator

Know Exactly How Good Your Prompt Is Before You Send It

Paste any prompt and get an instant quality score across five criteria. See exactly where it's strong and where it needs work — then let PromptSpark fix it for you in one click.

Prompt EvaluatorQuality analysis

Know Exactly How Good Your Prompt Is Before You Send It

Paste any prompt and get an instant quality score across five criteria. See exactly where it's strong and where it needs work — then let PromptSpark fix it for you in one click.

  • Scores across five criteria: clarity, specificity, context, tone, format
  • Actionable improvement suggestions for each criterion
  • One-click automatic prompt improvement
  • Works with any prompt for any AI model
  • Before/after comparison to see the difference
How it works

Three simple steps

Paste your prompt

Drop any prompt into the evaluator — from a quick question to a complex instruction set.

Get your quality score

See scores for clarity, specificity, context, tone, and format. Each rated 1–10 with specific suggestions.

Fix it automatically

Not happy with the score? Click 'Fix it for me' and get an improved version that addresses every weakness.

Use cases

Built for every workflow

Quality Assurance

Check prompt quality before sending to AI. Catch vague instructions, missing context, and unclear formatting before they waste API credits or produce poor results.

Learning Prompt Engineering

Understand what makes a prompt effective by seeing exactly which criteria your prompts score well on and where they fall short. Learn by doing.

Team Standards

Set quality baselines for your team's prompts. Evaluate prompts before sharing them in the team library to maintain consistent output quality.

Prompt Iteration

Iterate on prompts systematically instead of guessing. Score, improve, re-score — until your prompt hits the quality level you need.

Score your first prompt in seconds

Free to use. Paste a prompt and see its quality score instantly.