Thrive Capital criticizes the AI surge in Silicon Valley and bets on focused portfolios

Joshua Kushner, founder of Thrive Capital, directed explicit criticism at his Silicon Valley peers over their approach to the AI surge, warning in his first letter to investors against letting excessive enthusiasm erode investment discipline. Kushner, in a letter whose details were leaked to Bloomberg, argued that the venture-capital community on the West Coast has become caught up in chasing narrow, incremental technological shifts rather than anticipating the ultimate outcome that the technology will drive, asserting that the extraordinary opportunity presented by AI does not justify abandoning strict valuation standards.

Kushner offers an investment outlook that departs from the prevailing Silicon Valley philosophy, which treats venture investing as a game of chasing rare, exceptional cases and relies on spreading bets across a large number of startups while being prepared to lose most of them in the hope that a few winners will offset the failures. In contrast, Thrive Capital, based in New York, adheres to a principle of intensive concentration, with Bloomberg estimating that roughly 90 % of the firm’s capital is deployed into the top 15 investments in each fund, driven by its belief that markets constantly swing between fear and enthusiasm and that neither can substitute for independent, rational assessment.

Real transformation in sectors does not come solely from outside but begins from within.Thrive rejects reducing AI’s impact to the disruption of traditional firms by new entrants attacking from outside, and instead bets on transforming and restructuring existing entities from within. This approach is embodied in its arm Thrive Holdings, which has acquired more than 70 companies and employs a team of 35 engineers working with OpenAI, which itself obtained an equity stake in the entity in December 2025 and assigned staff to provide those companies with AI solutions, enabling its accounting platform to prepare tax returns 30 % faster and with 98 % accuracy, while independent agents handle half of the technical-service firm’s support tickets.

Not every fast-growing company is exceptional, and not every exceptional company is a worthwhile investment at any price.That principle, emphasized by Kushner, is backed by financial results that lifted the total assets under Thrive’s management to $60 billion, delivering a gross internal rate of return of 41 % and a net IRR of 33 % across its funds. Its early-stage fund for 2022, sized at $516 million, was valued at over $3.7 billion at the end of June thanks to its early stakes in OpenAI, Anduril and SpaceX, as well as its holding in Kearser, which closed its sale to SpaceX, its support of Wez, RAMP and Stripe, and its lead in the seed round of Essential AI founded by Ashish Vaswani, the primary author of the foundational transformer paper in AI.

These figures, together with the firm’s return of more than $1 billion of cash to investors over the past twelve months and its expectation of additional liquidity in the billions concurrent with its public-offering pathways, highlight a deep divergence in tech-investment trajectories. While the broad-bet diversification model has succeeded for firms such as Andreessen Horowitz, which returned $25 billion to its investors between 2009 and 2025, Thrive’s approach imposes a cash brake on inflated AI valuations, showing that maintaining quality and pricing standards remains the decisive gap between true value and temporary enthusiasm.