You ship the headline, then read the analytics two weeks later and guess at why. Articos builds a simulated audience of your exact buyers instead: describe who you're building for, it generates personas of those people, and you put a headline, a landing page or a whole concept in front of them. About thirty minutes later it comes back with what worked, what missed, and where your segments quietly disagree with each other. Articos puts it at 86% theme recall against Baymard and Nielsen Norman studies. It runs from Claude, ChatGPT and Cursor as well, it's free to try with no card, and it was the number one launch on Product Hunt on October 13.