Work out whether AI pays off for your business, with honest numbers.

The best free resources

• How to Measure ROI on AI Tools in a Small Business: The Real Numbers
  Worked money examples and cancel rules: when a tool pays and when to drop it.
  Lilach Bullock, lilachbullock.com · 2026

• Making AI Work: Leadership, Lab, and Crowd
  Why individual AI gains don't show up in the business, and how to change that.
  Ethan Mollick, One Useful Thing · May 2025

• The 4 Stages of AI Adoption—and Why Most SMBs Are Still Stuck at Level 1
  A simple four-level ladder to place your business; "SMB" here means under 5,000 staff.
  David Schonthal, Kellogg Insight · Mar 2026

Curated by effectiveAI. Every link checked November 2026. Know a better free resource? Tell us.