Every platform says free, and each means something different — watch-only, materials-only, ad-supported, or free all the way to the certificate. Here is what you actually get on each one.
Books are cheaper, denser, and timeless; courses offer structure, exercises, and a finish line. A fair comparison of what each does well — and the honest rule for choosing.
Certificates do not replace a portfolio or experience, but they are not worthless either — they clear AI-literacy screens and signal initiative. Here is when paying for one makes sense.
Free courses are not charity. The content is the giveaway; the credential is the product. A look at where the money actually comes from, and how to use that knowledge before you pay.
Google's AI course takes about ten hours and focuses on using the tools at work, not on theory. What the free audit includes, what the paid certificate adds, and where the course falls short.
Finland set out to teach one percent of its population the basics of AI. The free course it built has since reached over a million people worldwide, and the certificate still costs nothing.
Andrew Ng built a course for the people around AI, not the people building it: seven hours, no code, no math, free to audit. What it covers, what it deliberately skips, and who should take it.
AI skills now top employer shortage lists, and most of the courses that teach them cost nothing. A rundown of the best free options, and what "free" actually gets you in each case.