Hark raises $700M Series A for its secretive “universal” AI interface
$700M Series A. Brett Adcock's stealth AI startup just hit $6B valuation—and nobody knows what it does.

Why it matters
A massive funding round for a secretive AI interface startup signals investor conviction in a new category of AI infrastructure, but the lack of public product details raises questions about what problem Hark is actually solving and whether the $6B valuation is justified by market fundamentals or hype.
The key facts
6 to knowSeries A: $700M
Post-money valuation: $6B
Founder: Brett Adcock
Product positioning: 'universal AI interface' (unverified claims)
Status: Stealth/secretive
Date: May 21, 2026
Go to the source
TechCrunch AItechcrunch.com
Publisher excerpt: Brett Adcock's new AI startup is now valued at $6 billion by its investors.