Blind tests. Verified humans. Real answers.
Put two (or more) options in front of a crowd where every vote is a unique, verified human — and find out which one actually wins.
Audio, video, images, or text. Labels hidden until after the verdict. One human, one vote — enforced by World ID proof-of-personhood, not by promises.
Sign in with World ID in one step. Six live tests, one per format:
Just looking? Try the preview sandbox — no sign-in, votes don't count.
How it works
Verify once
Prove you're a unique human with World ID — without revealing who you are. Works on the web and inside World App.
Judge blind
Experience each option — listen, watch, read — then pick the best. Names stay hidden until after you choose; order is shuffled every time.
See the verdict
Labels unmask, results update live, and on majority-reward tests you earn points when your verdict lands with the crowd.
Why the results are trustworthy
One human, one vote
Every verdict is tied to a World ID proof-of-personhood. Bots, scripts, and ballot-stuffing simply don't count.
Blind by construction
The system behind each option never reaches your browser — not in the page, not in the network. Position is randomized per person.
Attention enforced
A vote only counts if you actually experienced every option — play time, reading time, and decision time are all checked server-side.
Read more: how blind testing works · why verified testers matter · audio methodology
Run your own test
Comparing voices, video cuts, thumbnails, or copy? IABT puts your options in front of a verified human crowd — blind, Sybil-proof, with results you can act on. Templates include head-to-head, star rating, ranked choice, tournament, majority-predict, and rapid-swipe.
Talk to us — contact@iabt.com