Thrive Capital's Joshua Kushner Warns Silicon Valley VCs About AI Euphoria
In Thrive Capital's first investor letter, Joshua Kushner cautions against letting AI enthusiasm undermine investment discipline, contrasting his firm's concentrated approach with Silicon Valley's 'outlier' philosophy.
Thrive Capital's founder Joshua Kushner used the firm's first-ever investor letter to deliver a pointed critique of how Silicon Valley venture capital firms are approaching the artificial intelligence boom. While acknowledging that the AI opportunity is immense, Kushner warned that excitement should not weaken investment standards. He specifically noted that the industry can become preoccupied with incremental technological steps rather than the ultimate trajectory of the technology.
Kushner, whose New York-based firm has been a major AI backer, argues that Thrive's strategy differs from the typical Silicon Valley model. Rather than spreading investments widely, Thrive concentrates about 90% of its capital into its top 15 holdings per fund, according to Bloomberg's estimates. This approach, he contends, reflects independent thinking in a market driven by fear and enthusiasm.
His comments stand in contrast to the philosophy popularized by Marc Andreessen, which sees venture capital as a game of outliers — making many bets with the expectation that most will fail, but that a few spectacular successes will more than compensate. That model, according to Kushner, can lead to abandoning startups that don't appear to be on a path to becoming major winners.
Thrive's approach instead focuses on a small number of people and ideas, and Kushner also dismisses the prevailing notion that VCs exist to disrupt incumbents from the outside. He believes many industries will be transformed from within.
The firm's relationship with OpenAI illustrates this thesis. Thrive is a major investor in the AI lab, and in December 2025 OpenAI took an ownership stake in Thrive Holdings, a spinout that acquires companies and applies AI to them. Thrive Holdings has purchased more than 70 businesses and employs a team of 35 engineers. Its accounting platform reportedly produces tax returns 30% faster with 98% accuracy, while its IT services firm uses AI agents to independently resolve half of its help desk tickets.
Financially, Thrive's strategy has proven successful. Its 2022 early-stage fund, which raised $516 million and invested in OpenAI, Anduril, and SpaceX, is now worth over $3.7 billion. The firm manages $60 billion in assets and reports a gross IRR of 41% and net IRR of 33%. It has returned more than $1 billion to investors in the past year, with more potential liquidity ahead.
Both approaches have worked — Andreessen Horowitz returned $25 billion to investors between 2009 and 2025. Kushner acknowledges that not every fast-growing company is exceptional, and not every exceptional company is a good investment at any price.
