CosynkAI School · Level 2 · Lesson 1 · Free

Compare two Excel files

Two versions of the same spreadsheet. Which prices changed? Which rows are new? Which disappeared? Doing it by eye takes hours and you still miss things. Today AI does it in one minute, and gives you a ready Excel file with every change.

15 minutes · Level 2 · Lesson 1 of 8 · Free · ChatGPT, Claude, Gemini · Practice files included

By the end of this lesson you will

• compare two Excel files in one minute, without formulas
• get a new Excel file with every change, ready to send
• know the exact buttons in ChatGPT, Claude and Gemini
• reuse 6 ready messages for price lists, clients, budgets and stock

Inside this lesson

1. Part 1 · The 2-minute win: Compare two price lists
2. Part 2 · Trust, but check: The answer key
3. Part 3 · Your own files: 6 ready messages to compare anything
4. Part 4 · Before you upload work files: The 20-second safety check
5. Part 5 · Don’t fall into these: Common mistakes

This lesson is free. Open it on your phone or computer and follow the pictures, step by step. Start Lesson 1 free.

Level 2 · Office: all lessons

For office work: Excel files, dashboards, PDFs, email, meetings and presentations with AI.

1. Lesson 1 · Compare two Excel files (free)
2. Lesson 2 · Fix and change a table (free)
3. Lesson 3 · Many files into one Excel
4. Lesson 4 · Dashboards and charts
5. Lesson 5 · PDFs and documents
6. Lesson 6 · Email and meetings
7. Lesson 7 · Presentations in 15 minutes
8. Lesson 8 · Your work assistant
9. Final · Final task + certificate

Other levels: Level 1 · Start · Level 3 · Creative. About CosynkAI School · My account