The unicorn factory is running hot again.

According to TechCrunch, which tracked VC-backed startups using data from Crunchbase and PitchBook, nearly 90 companies have crossed the $1 billion valuation mark in the first half of 2026 alone. That kind of pace puts this year in the same conversation as the frothiest periods in recent venture history — and it’s raising some familiar questions.

AI Is the Engine, But Not the Whole Story

The obvious culprit here is artificial intelligence. Investor appetite for AI startups has been ferocious, and many of this year’s newest unicorns are riding that wave directly.

Take Recursive, an AI research lab founded in 2025 — yes, just last year — that reached a $4.65 billion valuation after closing a $650 million Series A led by GV and Greycroft, with Nvidia also on the cap table, according to TechCrunch. Or MainFunc, which hit a $2.6 billion valuation off the back of a $485 million Series B for its AI workspace product, Genspark. EXA, which builds a web search engine specifically for AI agents, landed a $1.95 billion valuation after a $250 million Series C led by Andreessen Horowitz.

These aren’t household names yet — but they’re pulling in serious capital at serious valuations, often very early in their lives.

Still, TechCrunch notes that a surprising number of new unicorns have nothing to do with AI at all. Healthcare is having a strong showing. MiRus, a cardiovascular and orthopedic medical device company, hit a staggering $4.41 billion valuation after a $1.5 billion round from Boston Scientific. Forus, which automates patient care paperwork like benefit verifications and appeal letters, crossed $1 billion after a $160 million Series B. Vi Labs, an AI-assisted platform helping health organizations find patients and manage operations, reached a $1.64 billion valuation.

There’s even a manufacturing entrant: SendCutSend, which cuts custom industrial parts, became a unicorn on just $123 million raised total — a relatively lean number by today’s standards.

Space and Defense Are Having a Moment

One of the more striking trends in this year’s unicorn class is how many companies are chasing opportunities in space and national defense — two sectors that would have seemed like unusual venture bets a decade ago.

Cowboy Space, founded in 2023, is attempting to build a power grid in space to help run AI systems on Earth. It’s already valued at $2 billion after a $305 million Series B led by Index Ventures, according to TechCrunch. Starcloud, which is developing space-based data centers, hit a $1.1 billion valuation just a year after being founded, backed by Sequoia and Andreessen Horowitz among others.

On the defense side, Advanced Manufacturing Company of America — which makes aerospace and defense parts — reached a $1.1 billion valuation on a $300 million Series B. It was also founded in 2024.

The speed at which some of these companies are scaling from founding to billion-dollar status is genuinely striking. Several on this year’s list are barely a year or two old.

Real Value or Replay of the Bubble?

Here’s the uncomfortable question underneath all of this: are these valuations real?

The honest answer is: it depends on who you ask and which company you’re looking at. Some of these startups have concrete revenue, real customers, and clear market demand. Others are early-stage bets on technologies — space power grids, custom AI chips, autonomous hacking tools — that may take years to prove out commercially.

What’s different from the 2021 boom, arguably, is that many of today’s mega-rounds are backed by strategic investors with direct skin in the game. Nvidia keeps showing up on cap tables. Boston Scientific dropped $1.5 billion into a single medical device company. These aren’t just tourist investors chasing returns — they’re often buying access to technology they need.

But the exit market remains a real concern. IPO windows have been unpredictable, and acquisitions are complicated by antitrust scrutiny. A unicorn is only worth its valuation if there’s eventually a path to liquidity. With nearly 90 new ones minted in six months, that’s a lot of companies that will eventually need somewhere to go.

For now, the boom is real. Whether it’s sustainable is the question 2027 will have to answer.