Prompt Version Test Planner for fast browser-based work
Compare Prompt A and Prompt B, detect structural changes, and create test cases, scoring rubrics, and a judge prompt before making a new prompt your default.
中文：比较 Prompt A/B 版本，识别结构变化，并生成测试用例、评分表和评审 prompt，避免凭感觉替换默认提示词。
Example: Use it when improving custom instructions, product prompts, coding-agent prompts, SEO prompts, or reusable AI workflows.
Where this tool fits in real work
Use cases
- Paste Prompt A, Prompt B, and the improvement goal before replacing a reusable prompt.
- Detect structural changes such as added output format, acceptance criteria, safety boundaries, and context requirements.
- Copy a practical A/B test plan with edge cases, scoring rubric, and a judge prompt.
Review notes
- The tool does not run the models for you. It gives you a fair test design.
- A longer prompt should not win unless it performs better on ambiguous, long, risky, and format-constrained cases.
- Use it for custom instructions, coding-agent prompts, content workflows, SEO prompts, and team prompt libraries.
Local-first handling
This page is built as a browser utility. Inputs are processed in the page where possible, with no account requirement and no intentional upload step for the tool workflow.
When to use Prompt Version Test Planner
Good fit
- Paste Prompt A, Prompt B, and the improvement goal before replacing a reusable prompt.
- Detect structural changes such as added output format, acceptance criteria, safety boundaries, and context requirements.
- Copy a practical A/B test plan with edge cases, scoring rubric, and a judge prompt.
Before copying results
- The tool does not run the models for you. It gives you a fair test design.
- A longer prompt should not win unless it performs better on ambiguous, long, risky, and format-constrained cases.
- Use it for custom instructions, coding-agent prompts, content workflows, SEO prompts, and team prompt libraries.
Use a stricter workflow
If the context includes production secrets, customer records, private research material, or executable scripts, redact first and use a stricter human review workflow.
Keep learning this workflow
Keep working with nearby utilities
Prompt Version Test Planner questions
Does it run the A/B test automatically?
No. It creates a practical test plan and judge prompt you can run in your AI tool of choice.
What should I compare?
Compare the old prompt, the new prompt, and the improvement goal: accuracy, format reliability, actionability, tone, safety, or brevity.
Is this tool free?
Yes. The current Toolkits tools are free to use and do not require an account. If advertising is added later, it should be clearly labeled and kept away from primary tool controls.