US start-ups are elevating additional cash than at any level since 2021 because of investor bullishness about synthetic intelligence, however the enterprise capital market has tilted sharply in direction of funding a handful of giant non-public tech firms.
Greater than $30bn has been invested into fledgling teams already this quarter, in line with PitchBook information. An additional $50bn of fundraising can also be in practice, as enterprise capitalists work on a sequence of main offers involving OpenAI, Protected Superintelligence and defence tech start-up Anduril.
The keenness over AI has led buyers to spend at their quickest fee for the reason that market’s peak in 2021, a interval during which $358bn flooded into tech teams, saddling many with unrealistic valuations.
However VC teams imagine this funding cycle shall be completely different. “AI is a transformative drive that makes these firms higher,” mentioned Hemant Taneja, chief government of Basic Catalyst, certainly one of Silicon Valley’s largest enterprise companies.
“The best way to consider it’s ‘can these companies moderately develop 10x from the place they’re?’ The reply with all of those is sure, so they’re moderately priced,” he added.
After a two-year hunch, US fundraising leapt to about $80bn within the final quarter of 2024, in line with information from PitchBook. That represented one of the best fourth quarter since 2021. However simply six massive offers — involving OpenAI, xAI, Databricks and others — accounted for 40 per cent of that complete, mentioned Kyle Stanford, director of analysis at PitchBook
“It is a very elite group of firms which can be commanding the VC funding,” he added.
On the idea of offers already closed and people anticipated to take action within the coming weeks, the primary quarter of this yr is about to see comparable ranges of funding — which might make it one of the best first quarter for fundraising since 2022.

Previously two weeks alone, fintech firms Stripe and Ramp have introduced funding rounds at valuations of $91.5bn and $13bn, respectively, and AI start-ups Anthropic and Protect AI have inked offers at $61.5bn and $5.3bn, respectively.
VCs are additionally engaged on a sequence of large investments. OpenAI is in talks with SoftBank to boost $40bn at a $260bn valuation, which might be the biggest funding spherical ever, surpassing the $10bn funding into Databricks late final yr.
Anduril, based by Palmer Luckey, is in discussions to boost at the very least $2bn at a $30bn-plus valuation, greater than doubling the valuation it achieved in a funding spherical final summer season, in line with two individuals with information of the matter. Anduril declined to remark.
These extra established firms have annual revenues within the lots of of thousands and thousands or billions of {dollars} and are rising quick. That makes them comparatively secure bets, in line with Basic Catalyst’s Taneja, who has backed Anduril, Anthropic, Ramp and Stripe.
“It’s so ambiguous the place cash shall be made in AI, that numerous capital finally ends up concentrating into these firms which can be class leaders with a buyer base and huge markets,” he mentioned.
However the pleasure over AI has additionally boosted youthful firms with no revenues and, in some circumstances, no product.
Protected Superintelligence, launched final yr by Ilya Sutskever, co-founder and former chief scientist at OpenAI, raised $1bn at a $5bn valuation in 2024 and is in talks to boost new capital at a valuation of $30bn or extra, in line with two individuals with direct information of the deal. It has not but introduced a product. SSI declined to remark.
The large funding rounds being carried out mark a big departure from conventional enterprise capitalism, which targets nascent firms and is ruled by the “energy legislation” that states one of the best start-up in a portfolio will greater than repay the losses from the rest that fail.
“We’ve all the time thought [a venture fund’s] 50x return will come from a seed funding which they exit at IPO,” mentioned PitchBook’s Stanford.
In a largely untested experiment, that logic is now being utilized to firms which can be orders of magnitude bigger and extra developed by a brand new breed of what Stanford calls “pseudo-VCs”.
These embody Josh Kushner’s Thrive Capital, Basic Catalyst and Lightspeed Enterprise Companions, all of which have invested in additional than one of many massive rounds in latest weeks. All three companies are registered funding advisers, permitting them to put money into a wider vary of asset courses and to carry firms after they go public.
Every of the three teams have additionally raised $5bn-plus funds, giving them “scale sufficient to put money into start-ups at a $1bn valuation and maintain on for 15 years till its value $50bn, investing in a number of methods alongside the best way”, mentioned Stanford.
In line with Sebastian Mallaby, creator of The Energy Legislation, the conviction that even the priciest start-ups can nonetheless scale by 10 instances is what “allows fund managers to hurry in with excessive enthusiasm to marquee names and say ‘who cares what I’m paying? I’m a genius stepping into this title.’”
Whereas the probabilities of a longtime firm failing are slimmer, Mallaby cautioned, so too are the percentages its valuation will improve ten- or a hundred-fold. “The habits that labored rather well in early-stage investing have to be tailored once you transfer to a lot greater rounds.”
The massive funding rounds in dialogue at this time represented “a totally completely different type of enterprise than I’ve ever skilled”, mentioned Stanford.
VC’s peak in 2021 was characterised by a rising tide of spherical sizes and valuations: there have been about 854 offers of $100mn or bigger that yr, in line with PitchBook. This yr, complete funding is monitoring near 2021 ranges, however the market has turn into more and more lopsided.
“For those who’re OpenAI or Anduril — a high-growth, named model — you’re very nicely positioned. The cash is there for you . . . For those who’re on the opposite aspect, as most firms are, the cash will not be there,” mentioned Stanford.
“Perhaps it finally ends up at $80bn [raised this quarter], however $40bn of that is only one spherical . . . even the outliers in 2021 have been minuscule in comparison with that.”
Extra reporting by Cristina Criddle in San Francisco