Reactor
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Investors
Founders
About
Reactor is a San Francisco-based real-time generative-video infrastructure company that emerged from stealth May 28, 2026; co-founders Alberto Taiuti (CEO, former Luma AI CTO and Apple Vision Pro technical lead) and Bryce Schmidtchen (CTO, also a former Apple Vision Pro technical lead) are building a unified SDK and API that makes real-time world models accessible to developers for interactive AI applications across media/entertainment, physical AI, and robotics 123. AWS partners with Reactor to provide compute infrastructure and global distribution for real-time generative-video workloads, and Jeffrey Katzenberg joins as a board observer through his WndrCo holding company 12. The $59M Series A was led by Lightspeed Venture Partners with participation from WndrCo, Amplify Partners, Sky9 Capital, FPV Ventures, and Abstract Ventures 123.
Funding History
| Date | Round | Amount | Lead | Co-investors |
|---|---|---|---|---|
| 2026-05-28 | Series A | $59M | Lightspeed Venture Partners | WndrCo, Amplify Partners, Sky9 Capital, FPV Ventures, Abstract Ventures 123 |
What Investors Say
“Real-time video models are currently inaccessible to developers due to a lack of infrastructure that can reliably serve them. Alberto, Bryce, and the team bring a rare combination of real-time systems expertise and product vision to this problem.” — Bucky Moore, Partner at Lightspeed Venture Partners 12
“I was incredibly impressed, if not astounded, by just how innovative their approach is to storytelling tools. The real opportunity lies in making these technologies usable at scale. Reactor is building the platform that can enable a new generation of storytelling.” — Jeffrey Katzenberg, WndrCo 12
What Founders Say
“World models are redefining what AI can do, moving from systems that generate content in isolation, to ones that perceive and respond in real time. We are building the critical layer between the model labs and the developers who want to create with them.” — Alberto Taiuti, Co-Founder & CEO of Reactor 12
Sources
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PR Newswire, “Reactor Emerges from Stealth with $59M to Build the Platform for Real-Time AI Worlds,” May 28, 2026. Accessed May 2026. https://www.prnewswire.com/news-releases/reactor-emerges-from-stealth-with-59m-to-build-the-platform-for-real-time-ai-worlds-302783715.html↩↩↩↩↩↩↩
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Variety, “Real-Time AI Video Startup Reactor Raises $59M From Jeffrey Katzenberg, Other Investors,” May 28, 2026. Accessed May 2026. https://variety.com/2026/digital/news/reactor-real-time-ai-video-funding-jeffrey-katzenberg-1236755883/↩↩↩↩↩↩↩
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AWS Press Center, “Reactor Emerges from Stealth with $59M to Build the Platform for Real-Time AI Worlds,” May 2026. Accessed May 2026. https://press.aboutamazon.com/aws/2026/5/reactor-emerges-from-stealth-with-59m-to-build-the-platform-for-real-time-ai-worlds↩↩↩