The ad factory now advertising Speechify AI is called Vidify. Next, yours.

01 · Problem

Nobody knows what converts

Speechify grew into one of the largest consumer AI apps in the world — and its growth team will tell you the uncomfortable truth about paid creative: nobody can predict the winner. Not the marketer, not the founder, not the model. The ad you were sure about dies quietly; the one you almost didn't ship prints money.

So Speechify stopped trying to predict and started testing — roughly $500,000 a month on creative experimentation, at a pace no human team can storyboard¹. The bottleneck wasn't budget or ideas. It was production.

02 · Machine

So they built the machine

“If you use the tool that everybody else uses, typically you're not going to win.”

Cliff Weitzman, founder & CEO of Speechify, on 20VC¹

Off-the-shelf ad tools produce off-the-shelf ads. So Speechify built its own platform² and kept feeding it. That operating lesson now powers Vidify: research the product, generate many distinct ideas, QA the output, and let the market vote. The 1,300-a-day testing operation continues; Vidify is also now being used to advertise Speechify AI.

03 · Lesson

The winner nobody predicted

The clearest proof that nobody can predict a winner came before Vidify: a human-made rap song about dyslexia and ADHD, the creative Cliff expected the least from. It was not AI-generated and it was not made by Vidify. It generated roughly $3 million in revenue³. The relevance is the lesson, not the attribution: test broadly enough to let the market surprise you.

“We're getting to the point where soon we're going to spend more in tokens than we spend on actual salaries.”

Cliff Weitzman on 20VC¹

04 · Product

Now it's yours

That operating thesis became Vidify. Today it's being used to advertise Speechify AI. Point it at your product and it researches the truth, writes concepts, generates images and video, QAs the output, and hands you finished ads.

If your product looks more like a piece of code than a bicycle, this was built for you. You don't need Speechify's budget — just one source and an opinion about what to test next.