Alexander Wissner-Gross
About Alexander Wissner-Gross
Alexander D. Wissner-Gross holds three MIT bachelor's degrees, in physics, electrical science and engineering, and mathematics. His CV says he was the last person in MIT history to earn a triple major. He completed a Ph.D. in physics at Harvard in 2007. He has taught at Harvard and MIT.
His personal site describes him as a physicist, computer scientist, entrepreneur and investor working at the intersection of AI and the physical world. He is Founder and Chief Scientist of Physical Superintelligence (PSI). Since 2011 he has been Founder, President and Chief Scientist of Gemedy, which builds intelligent government systems. Crunchbase also lists him as founder and chief scientist of Enernetics.
He co-hosts the Moonshots podcast and writes The Innermost Loop, a daily newsletter.
His CV lists Reified, LLC as a startup investing and advising firm. He has been its Founder and Managing Partner since 2019. His site says he has backed and advised more than 40 technology companies, directly and through 021T Capital and Reified. He is also a Venture Advisor at Link Ventures, a Boston early-stage firm that invests in AI startups from seed to Series A. His Wellfound profile lists him as an angel. The sources reviewed do not publish a dated list of his individual investments.
The AI round we can confirm is Architect Labs. It is a Palo Alto startup that applies AI to custom chip design. It emerged from stealth on June 18, 2026 with a $24M seed round led by Kindred Ventures. Other participants included TQ Ventures, Race Capital, Together Fund and Link Ventures. Wissner-Gross is named in the announcements as one of several individual investors in the round.
His public work centers on AI and its links to the physical world, and his advisory roles include a biotech company and an AI-focused venture firm. NFX Signal lists his investment range as $1 to $1M, with a typical check of $10K. Those figures come from a third-party profile, not from him. We found no public statement from him about what he looks for in a pitch.
- Architect Labs: AI-driven custom silicon design startup; he took part in its $24M seed round announced June 2026.
- alexwg.org
- alexwg.org/AWG-CV.pdf
- crunchbase.com/person/alex-wissner-gross-7e8a
- crunchbase.com/person/alexander-wissner-gross
- kindredventures.com/announcement/architect-labs-democratizing-custom-c
- finance.yahoo.com/technology/ai/articles/architect-labs-raises-24m-see
- f4.fund/firms/link-ventures
- signal.nfx.com/investors/alexander-wissner-gross
Investing activity
Alexander Wissner-Gross appears in 1 AI deal tracked by the Lounge deals desk, rounds totalling $24M. The rounds are mostly Seed, with a median round size of $24M. The most recent is Architect (Seed, $24M, Jun 2026).
Alexander Wissner-Gross most often invests alongside Kindred Ventures, Srinivas Narayanan, Together Fund and Shaad Khan, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Alexander Wissner-Gross
Does Alexander Wissner-Gross invest in AI startups?
Yes. He took part in the $24M seed round for Architect Labs, announced June 18, 2026. His site describes his work as sitting between AI and the physical world.
What check size does Alexander Wissner-Gross write?
He has not stated one publicly. NFX Signal lists a $1 to $1M range with a $10K typical check, but that is a third-party estimate.
What stage does Alexander Wissner-Gross invest in?
His clearest recent AI investment is a seed round. He also advises Link Ventures, which invests from seed to Series A. He has not published a personal stage preference.
What firms is Alexander Wissner-Gross associated with?
He is Founder and Managing Partner of Reified. His site also names 021T Capital. He is a Venture Advisor at Link Ventures and Founder and Chief Scientist of Physical Superintelligence.
How can founders contact Alexander Wissner-Gross?
His personal site, alexwg.org, lists an email address. He is also on X as @alexwg and on LinkedIn.
Is Alexander Wissner-Gross an angel investor?
Yes. Alexander Wissner-Gross invests personally as an angel.
What AI companies has Alexander Wissner-Gross invested in?
Alexander Wissner-Gross's AI investments include Architect. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Alexander Wissner-Gross invest at?
In the rounds tracked on Lounge, Alexander Wissner-Gross has invested at Seed, with a median round of $24M.
Who does Alexander Wissner-Gross co-invest with?
Alexander Wissner-Gross's most frequent co-investors on Lounge are Kindred Ventures (1 deal), Srinivas Narayanan (1 deal), Together Fund (1 deal), Shaad Khan (1 deal) and Jeffrey Dean (1 deal).
How can founders reach Alexander Wissner-Gross?
Founders on Lounge can see Alexander Wissner-Gross's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Alexander Wissner-Gross to their Investor Pipeline to track the conversation.