I Built a Search Engine That Understands Meaning — in ~150 Lines, Zero API Keys (opens in new tab)

Type "animals that live in the ocean" into a normal search box and it hunts for the words animals, live, ocean. An article titled "Blue whale" that never uses any of those words? Missed. Today we fix that. We'll build a search engine that matches on meaning, so "animals that live in the ocean" surfaces Blue whale and Coral reef — no shared keywords required. The whole thing is a few hundred lines, runs on free tooling, and needs no API key. The two ideas you'll walk away understanding are the...