AI Prompt Diff Tool
Compare prompt versions side by side — additions, deletions, changes highlighted — track your prompt iterations
Enter two prompts above to see their differences highlighted side-by-side.
You’re iterating on an AI prompt — tweaking system instructions, adjusting few-shot examples, refining output constraints. After several rounds of edits, it’s hard to see exactly what changed between version 3 and version 7. A diff view shows every addition, deletion, and modification at a glance.
What This Tool Does
Paste two prompt versions and see a side-by-side diff with highlighted changes. Additions are green, deletions are red, and modifications are shown inline. Track your prompt engineering iterations with precision.
Everything runs in your browser. Your prompts never leave your device.
When to Use This
- Prompt iteration — compare prompt versions to understand what changed and why
- Team collaboration — review prompt changes from teammates before deploying
- A/B testing analysis — document the exact differences between two prompt variants
- Version control — keep track of prompt changes alongside your codebase
FAQ
Does this send my prompts to a server?
No. All processing happens entirely in your browser. Your prompt text never leaves your device.
How is this different from a regular text diff?
This tool is optimized for prompt text — it handles multi-line system prompts, XML tags, and template variables cleanly, with a UI designed for prompt engineering workflows.