Listen Labs has raised $69 million in Series B funding at a $500 million valuation — a sharp contrast to the $5,000 billboard the startup used to recruit engineers just months earlier. The round, led by Ribbit Capital with Evantic, Sequoia Capital, Conviction, and Pear VC, brings total funding to $100 million.
The Raise
- $69M Series B led by Ribbit Capital
- $500M valuation; $100M total capital raised
- 15x annualized revenue growth to eight figures in nine months
- Over one million AI-powered interviews conducted
Listen Labs replaces traditional market research with an AI researcher that finds participants, runs open-ended video interviews, and delivers actionable insights in hours instead of weeks.
The Billboard Stunt
Facing a need to hire 100+ engineers while competing against Silicon Valley’s top payers, CEO Alfred Wahlforss spent $5,000 — a fifth of his marketing budget — on a San Francisco billboard showing what looked like gibberish: five strings of random numbers. They were AI tokens pointing to a coding challenge: build an algorithm to act as the digital bouncer at Berghain, the Berlin club famous for rejecting almost everyone. Thousands attempted it; 430 cracked it, and the winner flew to Berlin all expenses paid. The stunt drew an estimated 5 million social views.
Why Surveys Fail
The platform’s pitch is that both sides of traditional research are broken: surveys deliver false precision and dishonest answers, while one-on-one interviews don’t scale. Listen’s AI moderator conducts open-ended video conversations with follow-up questions, which the company says draws out more honest answers, especially on sensitive topics.
Fighting Fraud
Building that trust meant confronting rampant industry fraud. Listen built a quality guard that cross-references LinkedIn profiles against video responses and checks answer consistency. Customer Emeritus reported roughly 20% of its previous survey responses were fraudulent or low quality; with Listen, that fell to nearly zero.
Speed as a Weapon
- Microsoft moved from 4–6-week research cycles to insights in days — and collected global customer stories in a single day
- Simple Modern went from concept to 120 responses in under three hours
- Chubbies grew youth research participation 24x with AI interviews that fit kids’ schedules
What Comes Next
Listen is building synthetic customers — simulated user voices extrapolated from its interview corpus — and automated actions from research findings, with guardrails to keep companies in the loop. Its bet: market research is a $140 billion industry, and AI makes it cheap enough that demand explodes rather than shrinks. As investor Nat Friedman puts it on Wahlforss’s radar: slow is fake.