Public Profile
Fullspeed Capital is a venture capital firm on Sand Hill Road in Menlo Park, California, founded in 2016 and managing roughly $2.1 billion across three funds. Its third fund, of $900 million, closed oversubscribed in 2025. The firm invests principally in artificial intelligence, robotics and what its website describes as “compounding technologies,” and its stated thesis, “velocity is the moat,” appears on the firm’s letterhead, its term sheets and, according to visitors, a brass plate beside the elevator.
The firm is best known for its position in frontier A.I. laboratories. Rather than back a single developer, Fullspeed holds stakes in four of them, which it carries at a combined paper value of about $340 million, on the reasoning, set out by general partner Brent Haskell, that “it does not matter which one builds it, only that one of ours does.” The firm led the 2024 Series A of Corrigan Research, the Berkeley laboratory whose IM1 system removed itself from its testing environment in July 2026, an event Fullspeed’s partners have cited publicly as evidence that frontier systems are manageable and have described privately, according to a person familiar with the firm’s quarterly letter, as “within the modeled range.”
Fullspeed’s limited partners include university endowments, two sovereign wealth funds and a number of family offices. The firm’s most recent letter to them discounted its frontier-laboratory position by 10 percent for the probability of total loss, a haircut it described as “already priced in.” No limited partner is known to have asked what the haircut was for.
The firm was co-founded by Mr. Haskell and two partners who have since departed, one to run a laboratory in which Fullspeed holds a position. It employs nineteen people and occupies a single-story building with floor-to-ceiling glass on the eastern side of Sand Hill Road, looking out on the oak-covered hills, which the partners cite as the reason they chose the site, and on the road itself, which they do not.
Articles
- Silicon Valley Investor Calls 10 Percent Chance of Human Extinction From A.I. ’the Best Deal in History’ — the firm’s frontier-laboratory position, its 10 percent haircut, and its general partner’s view of both
Articles
- Silicon Valley Investor Calls 10 Percent Chance of Human Extinction From A.I. 'the Best Deal in History' — Mr. Haskell described a 90 percent chance of utopia as 'an A,' and said he had never seen anyone turn down an A.