How does the prompt evaluation work?

Our prompt evaluator analyzes your prompt across 8 criteria: clarity, role definition, context, task definition, output format, examples, constraints, and structure. It provides a total score out of 100 and a letter grade (A-F) with detailed feedback.

What makes a good AI prompt?

A good AI prompt includes: a clear role definition, sufficient context, a specific task, desired output format, examples when helpful, clear constraints, and proper structure. Our evaluator checks all these elements.

Is the prompt evaluator free?

Yes, our prompt evaluator is completely free to use. You can evaluate unlimited prompts without any cost or registration required.

Which AI models does this work with?

Our prompt evaluator works with prompts for all major AI models. The evaluation criteria apply to all AI models.

How can I improve my prompt score?

To improve your prompt score: define a specific role, provide clear context, be specific about the task, specify the output format, include examples when helpful, add constraints, and organize your prompt with clear sections. Our evaluator provides detailed feedback on each area.

promptier

Prompt Quality Checker

Q: What is a prompt evaluator?

A prompt evaluator analyzes and grades AI prompts. It evaluates factors like clarity, structure, context, role definition, output format, examples, and constraints to provide a quality score and feedback.

Test and score your prompts. Get quality scores, detailed feedback, and tips to improve.

Analyzes prompts across 8 criteria: clarity, role definition, context, task, format, examples, constraints, and structure.

Test Your Prompt

Paste your prompt below to get instant evaluation and scoring. We test clarity, structure, context, role definition, output format, examples, and constraints.

Your Prompt

0 characters

Enter a prompt to begin evaluation

How It Works

Our evaluation system uses established prompt engineering principles to assess your prompts. We analyze eight key dimensions that determine prompt effectiveness:

Clarity and specificity of instructions
Role definition for the AI
Context and background information
Task definition and requirements
Output format specifications
Examples and demonstrations
Constraints and limitations
Overall structure and organization

Each criterion is scored independently, giving you a comprehensive view of your prompt's strengths and areas for improvement. The feedback includes specific, actionable recommendations you can implement immediately.

Understanding Evaluation Criteria

Clarity & Specificity

Prompts should use clear, unambiguous language with concrete details rather than vague instructions. Specific prompts produce more consistent and useful results.

Role Definition

Defining a specific role or persona helps the AI understand the perspective and expertise level expected in the response. This is especially important for specialized tasks.

Context

Providing sufficient background information helps the AI understand the situation, constraints, and goals. Context prevents misunderstandings and improves relevance.

Task Definition

A well-defined task includes specific requirements, deliverables, and success criteria. Vague tasks lead to inconsistent outputs.

Output Format

Specifying the desired format (JSON, markdown, structured text, etc.) ensures the output matches your needs and can be easily processed or integrated.

Examples

Including examples demonstrates the desired output style, format, and quality level. This is particularly effective for complex or creative tasks.

Constraints & Rules

Clearly stating limitations, boundaries, and rules prevents the AI from producing unwanted content and ensures compliance with requirements.

Structure

Well-organized prompts with clear sections are easier for the AI to parse and follow. Structure improves comprehension and execution.