AI Prompt Optimizer

What Makes a Good AI Prompt?

The difference between a mediocre AI response and a brilliant one almost always comes down to the prompt. Prompt engineering is the skill of crafting instructions that get the best possible output from AI models like ChatGPT, Claude, and Gemini. This free tool scores your prompts across four key dimensions and shows you exactly how to improve them.

The Four Pillars of Prompt Quality

1. Clarity (0-25 points)

A clear prompt starts with an unambiguous instruction verb and avoids vague references. Instead of "Tell me about it", say "Explain the three main benefits of serverless architecture". Good prompts are neither too short (missing detail) nor unnecessarily long (burying the key ask). Avoid vague words like "something", "stuff", and "things" that force the AI to guess what you mean.

2. Specificity (0-25 points)

Specific prompts include concrete numbers, mention the desired output format, and set clear boundaries. Telling the AI "Give me 5 bullet points, each under 20 words" produces far better results than "Give me some ideas". Adding role context like "You are a senior marketing strategist" helps the AI tailor its response to the right level of expertise.

3. Structure (0-25 points)

Well-structured prompts use line breaks, bullet points, and clear sections to separate different concerns. A prompt with distinct sections for context, instructions, and constraints is much easier for AI models to parse and follow accurately. Including examples and using delimiters like quotes or backticks to mark specific data further improves results.

4. Effectiveness (0-25 points)

The most effective prompts assign a clear role or persona to the AI, specify the output format in detail, define the target audience, set the desired tone, and include success criteria. Telling the AI what to avoid is just as important as telling it what to do.

Quick Tips for Better Prompts

• Start with a role: "You are an experienced [profession]" primes the AI to respond with domain expertise.
• Be explicit about format: "Respond as a numbered list", "Use a table with columns for X, Y, Z", or "Write in markdown".
• Add constraints: Length limits, tone preferences, and scope boundaries all help focus the output.
• Show, don't just tell: Include an example of what a good response looks like.
• Say what to avoid: "Do not include generic advice" or "Avoid technical jargon" prevents common failure modes.
• Iterate: Use this tool to score your prompt, apply the suggestions, and score again. Most prompts improve significantly after two rounds of refinement.

Privacy

All analysis happens entirely in your browser. Your prompts are never sent to any server, stored, or logged. There is no tracking, no cookies, and no signup required.