Fundz

Reactor, a real-time generative video platform, expands its Series A round with NVIDIA and Sapphire Ventures joining Lightspeed Venture Partners. This funding aims to scale its infrastructure for real-time world models.

PRIVATEOct 05, 2026

Round Type

Series A

San FranciscoSoftware

Investors

Lightspeed Venture PartnersSapphire VenturesNvidia

Description

Reactor has expanded its Series A funding round to include NVIDIA and Sapphire Ventures alongside lead investor Lightspeed Venture Partners. This investment comes as the demand for real-time generative video and world models grows. The funding will help advance Reactor's platform to run increasingly powerful world models. These advancements will enable systems to simulate, understand, and interact with dynamic environments.

Company Information

Company

Reactor

Location

San Francisco, California, United States

About

Reactor is a San Francisco-based company providing a developer platform for real-time generative video. The platform allows developers to build real-time interactive applications in just a few lines of code, simplifying the deployment process. Reactor works with partners across media, entertainment, and robotics industries, meeting customer demand from film studios and robotics companies.

Fundz sees it the moment Reactor raises, hires an exec or expands, usually minutes after it happens, and tells you who to reach.

Predictive Intelligence
Strategic

ML-powered predictions for Reactor's next move

See what Strategic adds

Funding Insights

What this usually means
Typical timeline to Series B
Series A companies typically raise their next round in 10-18 months

Reactor raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

145 of these a day, filtered to the companies you pick, with the decision-maker attached.

5 screens from a live account. No signup.

Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals, including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications, based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include FundzWatch™ for automated website change detection, Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 281,000+ organizations. Developers and data teams can access these signals programmatically via the Fundz Funding Data API, with transparent published pricing.