• Alfred Wahlforss was running out of options. • His startup, Listen Labs, needed to hire over 100 engineers, but competing against Mark Zuckerberg’s $100 million offers seemed impossible. • So he spent $5,000 - a fifth of his marketing budget - on a billboard in San Francisco displaying what looked like gibberish: five strings of random numbers. • The numbers were actually AI tokens. • Decoded, they led to a coding challenge: build an algorithm to act as a digital bouncer at Berghain, the Berlin nightclub famous for rejecting nearly everyone at the door. • Within days, thousands attempted the puzzle.
Article Summaries:
- Listen Labs, a startup that uses AI to conduct large‑scale customer interviews, secured $69 million in a Series B round led by Ribbit Capital, with participation from Evantic and existing investors Sequoia, Conviction, and Pear VC. The funding values the company at $500 million and brings total capital raised to $100 million. The round followed a viral hiring stunt in which a San Francisco billboard displayed cryptic AI tokens that led to a coding challenge; 430 people solved it and some were hired. Since launch, Listen Labs has grown annualized revenue 15‑fold, reached eight figures, and completed over one million AI‑powered interviews.
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