Reactor
San Francisco-based developer platform for running real-time generative video and world models with low latency.
- Industry
- AI infrastructure, real-time generative video and world models
- Location
- San Francisco, CA
About
Reactor provides infrastructure for running generative video and world models in real time: an inference engine, a global GPU cloud and a low-latency streaming layer, reached through one SDK and API. The company says studios, advertising platforms and world model labs use the platform, and that it also serves robotics teams.
Lightspeed names co-founders Alberto Taiuti, who is CEO, and Bryce Schmidtchen.
Funding history
| Round | Date | Amount | Lead |
|---|---|---|---|
| Series A 2026 | 2026-05-28 | Lightspeed Venture Partners |
Investors
- Lightspeed Venture Partners lead
- NVIDIA participant
- Sapphire Ventures participant
- WndrCo
- Amplify Partners
- Sky9 Capital
- FPV Ventures
Sources
Last verified:
- https://lsvp.com/stories/the-developer-platform-for-world-models-our-series-a-in-reactor/
Type: official investor website. Accessed 2026-10-06.
Lightspeed post dated 2026-05-28. Says Lightspeed is leading the Series A after co-leading the seed, $59M in combined funding, and names co-founders Alberto Taiuti and Bryce Schmidtchen. - https://markets.financialcontent.com/stocks/article/bizwire-2026-10-5-reactor-expands-investors-in-series-a-round-to-scale-real-time-world-model-infrastructure
Type: funding announcement. Accessed 2026-10-06.
Business Wire release dated 2026-10-05, read on FinancialContent. Says NVIDIA and Sapphire Ventures joined the Series A led by Lightspeed Venture Partners. - https://www.finsmes.com/2026/10/reactor-closes-series-a-funding.html
Type: reputable publication. Accessed 2026-10-06.
FinSMEs article dated 2026-10-06. Source of the San Francisco, CA location. Calls the amount undisclosed and lists Lightspeed, WndrCo, Amplify Partners, Sky9 Capital, FPV Ventures, NVIDIA and Sapphire Ventures together as leading the round.