About this tool
A line-level diff for prompts, configs, and prose. Uses an LCS algorithm to show the minimum set of additions and deletions — the same approach as git diff.
How it works
- Paste the original into the left box and the changed version into the right.
- The diff is rendered below with additions in green and removals in red.
- Additions/removals are counted at the top.
When to use it
- Comparing two versions of a system prompt during eval.
- Diffing two YAML configs before deployment.
- Reviewing an LLM's edits to a draft.