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AI Is Killing CAPTCHA. Prelude Wants To Build The Verification That Comes Next

The Paris-based startup recently raised $20M as it tries to turn a single signal, your phone number, into the most reliable trust anchor on the internet.

The most interesting thing about Prelude's recent fundraising round isn't the fundraising. It's how the company is fundamentally repositioning itself and its products three years after launching to meet the challenges of the agentic era.

The fundraising itself is real and not small. Prelude closed a $20 million Series A round led by 20VC, with existing backers Singular, Seedcamp, Deel, and FDJ Ventures along for the ride.

The angel list reads like a LinkedIn vision board: the COO of Synthesia, Revolut's global CMO, the CEOs of Grindr and Cleo, and the former CTO of Match Group. It brings Prelude's total raised to $27 million in roughly three years. Revenue and customer count have both grown 6x in the past twelve months. One of the world's largest social platforms, X, is using it to try to weed out bots.

The more useful story is what Prelude is becoming. Founded in late 2023 by Matias Berny and Quentin Le Bras (both Zenly alumni, the French location-sharing app Snap acquired and then shut down), the company started life as a phone verification provider. That's the unglamorous plumbing that sends you a six-digit code when you sign up for a new app.

With this round, Prelude is launching two new products, Auth API and Intel API, that push it well beyond that narrow remit and into what it calls "the onboarding and trust layer for the AI age."

The Snap weekend that started it all

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