Company intelligence
Hallstone Ventures
Backing AI infrastructure for the modern attention economy.
About Hallstone Ventures
Hallstone Ventures is a Los Angeles-based seed fund backing founders building AI-driven infrastructure for the modern attention economy. We invest in the foundational software layer behind how media is created, distributed, measured, protected, monetized, and experienced. Our focus spans creator infrastructure, AdTech and monetization rails, immersive and spatial media systems, and frontier media technologies. Led by media-technology operator Seth Hallen, Hallstone pairs sector focus with a 70+ LP network of operators and domain experts across media, entertainment, advertising, and technology. We back founders building durable technology for the next generation of creators, brands, platforms, and media companies. Fund I is closed to new investors. Nothing here should be construed as an offer to sell or solicitation of an offer to buy securities.
Verified activity
Signals from Hallstone Ventures
11 published signals
Products & Services
Hallstone Ventures highlights that the problem of live video feed resolution and inference is largely solved with V-Nova Ltd. and swXtch.io, Inc. building a way to ask how much of a stream a model actually requires.
Reported by Andy Beach
Presence & Recognition
Hallstone Ventures hosted a media work and agent earnings use-case map presentation at the Hall 3 conference with Carolina Dolan Chandler.
Reported by Andy Beach
Presence & Recognition
Hallstone Ventures employee Andy Beach attended Chuck Parker's presentation at the IBc2026 summit and the Devoncroft summit in Amsterdam.
Reported by Andy Beach
Products & Services
Hallstone Ventures notes that Anthropic shipped one model in two forms, Fable for anyone who can pay and Mythos for partners it vets, with the U.S. government involved in the program.
Reported by Andy Beach
Products & Services
Hallstone Ventures notes that Anthropic rents $1.25B a month of compute from the same SpaceX.
Reported by Andy Beach
Products & Services
Hallstone Ventures built a permission system around what AI models may take, with the labs just building one around what customers may have.
Reported by Andy Beach
Legal & Regulatory
Hallstone Ventures notes that the Department of Justice filed a brief siding with OpenAI against The New York Times, telling a federal court that training on copyrighted articles is fair use.
Reported by Andy Beach
Legal & Regulatory
Hallstone Ventures notes that a federal judge ruled the Pentagon broke the law blacklisting Anthropic, with four days later Anthropic coordinating with the government on who gets Mythos.
Reported by Andy Beach
Legal & Regulatory
Hallstone Ventures notes that OpenAI confirmed Astra crossed its Critical cyber threshold and will ship with the top capabilities held back for testers first.
Reported by Andy Beach
Presence & Recognition
Hallstone Ventures was featured by Ashley Cullins at The Ankler among 8 VC firms investing in Hollywood's next act.
Reported by Hallstone Ventures
Presence & Recognition
Hallstone Ventures was featured in a look at 8 VC firms shaping Hollywood's next act by Ashley Cullins at The Ankler.
Reported by Seth Hallen