tool · ai / dev
promptdiff.
diff two LLM prompts and visualize what actually changed.
two prompts in. structural diff out: which sections were added, reorganized, or had token-count drift. catches subtle prompt regressions.
~/projects/your-app
$ npm i -g promptdiff
added 1 package in 0.8s
$ promptdiff old.md new.md
+412 / -198 tokens / 3 sections changed
install
one line, three platforms.
npm
npm i -g promptdiff
brew (mac/linux)
brew install voidd0/tap/promptdiff
github releases
single static binary for linux / macos / windows. no runtime needed.
github releases →use it
free. mit. no signup.
issues + bug reports welcome on github. response sla under 36h on weekdays.