Joshua Kushner Warns VCs on AI Hype as Thrive Capital Reaches $60 Billion
Thrive's Joshua Kushner warns against AI hype as concentrated bets, OpenAI ties and a $3.7 billion fund showcase its disciplined VC strategy and returns.
Summary
In Thrive Capital’s first investor letter, leaked to Bloomberg, founder Joshua Kushner calls AI’s opportunity enormous but warns Silicon Valley’s fixation on incremental advances and enthusiasm can erode price and investment discipline. Rejecting Marc Andreessen’s outlier model of many bets offset by a few mega-hits, New York-based Thrive puts an estimated 90% of each fund’s capital into its top 15 investments, concentrating support across stages, sectors and geographies. Kushner also expects AI to transform incumbents internally, not merely disrupt them.
Thrive’s clearest example is OpenAI: after Thrive became a major investor, OpenAI took a stake in Thrive Holdings in December 2025 and dedicated employees to help modernize acquired companies. The spinout has bought more than 70 businesses and employs 35 engineers; its accounting agents produce tax returns 30% faster with 98% accuracy, while IT agents independently resolve half of help desk tickets. Thrive’s $516 million 2022 early-stage fund, with early OpenAI, Anduril and SpaceX bets, exceeded $3.7 billion by June’s end, Bloomberg reported. Across 15 years, Thrive increased those stakes, held a sizeable Cursor stake before its sale to SpaceX, backed Wiz, Ramp and Stripe, and led the seed round for Essential AI, founded by former Google Brain researcher and Transformers paper lead writer Ashish Vaswani. Kushner disclosed $60 billion under management, 41% gross and 33% net IRR, over $1 billion returned within 12 months, and potential billions more in coming quarters, without identifying exits; SpaceX’s IPO began that process and OpenAI is pursuing one. Andreessen Horowitz also returned $25 billion from 2009 to 2025, Eric Newcomer reported, while Thrive’s model may be unavailable to smaller seed funds lacking Kushner’s billionaire New York real estate family access.
Positives
- Thrive’s $516 million 2022 early-stage fund exceeded $3.7 billion by the end of June after early OpenAI, Anduril and SpaceX investments.
- Thrive reported $60 billion under management, with a 41% gross IRR and 33% net IRR across all funds.
- More than $1 billion reached Thrive investors within 12 months, with Kushner forecasting billions more in potential liquidity during coming quarters.
- Thrive Holdings has acquired more than 70 businesses and assembled 35 engineers to apply OpenAI technology across established companies.
- Accounting agents produce tax returns 30% faster with 98% accuracy, while IT agents independently resolve half of help desk tickets.
- Thrive also backed Cursor, Wiz, Ramp and Stripe, and led Essential AI’s seed investment.
Risks & concerns
- Kushner warns that Silicon Valley’s AI enthusiasm and fixation on incremental advances can weaken investment and pricing discipline.
- Thrive concentrates an estimated 90% of each fund’s capital in its top 15 investments, making performance heavily dependent on relatively few companies.
- The outlier model can withdraw continuing support from startups judged unlikely to become mega-hits, as occurred during the post-pandemic lean years.
- Kushner did not identify which holdings could produce the additional billions of dollars in liquidity forecast for coming quarters.
- Thrive’s concentrated approach may be impractical for smaller seed funds lacking Kushner’s access through a billionaire New York real estate family.