San Francisco billboard challenge puts AI engineers to the test

On a quiet San Francisco street, a plain white billboard seemed to appear out of nowhere. No logo, no tagline, just five strings of numbers. Was it an ad? An art project? Or something else entirely?

"It was a moment of desperation," he said.

Alfred Wahlforss, cofounder and CEO of a small startup called Listen Labs , had a big problem: how to compete for artificial intelligence engineers against Silicon Valley giants.

"We're hiring over 100 people over the next few months and there are empty spots, but we can't fill them because Mark Zuckerberg is giving $100 million offers to the best engineers," he said.

So they did something off the wall, spending a fifth of their marketing budget, about $5,000, on a billboard.

To most, it looked like gibberish. To the right eyes, a coding challen