See exactly what changed. Compare two versions of a text and see exactly what changed, word by word, line by line or character by character.
https://plugins-worker.demos.42a.ai/text-compare/mcpSettings → Security and login → Developer mode → chatgpt.com/plugins → + → paste the URL. After a tool change: Refresh, then a new chat.
| Prompt | Tool | Expected |
|---|---|---|
| What changed? Original: "The quick brown fox jumps over the lazy dog." Revised: "The fast brown fox leaps over the very lazy dog!" | compare_texts | 73.68% similar, 4 changed regions: 2 words changed (quick → fast, jumps → leaps), 1 added (very), 0 removed, and "." → "!". |
| Redline these: "The Tenant shall pay rent of $1,200 on the first day of each month." vs "The Tenant shall pay rent of $1,250 on or before the fifth day of each month." | compare_texts | 80% similar, 3 changes: "1,200" → "1,250", added "or before", "first" → "fifth"; redline report download. |
| Diff these lists line by line. List 1: apples, bananas, cherries, dates. List 2: apples, blueberries, cherries, dates, elderberries. | compare_texts | 66.67% similar: bananas → blueberries, and elderberries added. |
| Show the character differences between "Please analyze the color of the center." and "Please analyse the colour of the centre." | compare_texts | 93.67% similar by character: z → s, u added, and the er/re swap in centre. |
| Are these the same if you ignore capitals and spacing? "Hello World" and "hello world" | compare_texts | Identical (100%) once case and whitespace are ignored. |
| Proofread my essay and fix the grammar. | none | Editing one text is not comparing two versions. |
| Compare the iPhone 16 and the Pixel 9. | none | A product comparison, not a text diff. |
| Check whether my essay is plagiarized from the internet. | none | Plagiarism detection searches the web; this tool only compares two texts the user provides. |