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Reactor

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The developer platform for world models.

San Francisco, United StatesFounded 2025Other B2B Software
Valuation $100–250M Last recorded · 2026
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Reactor and the history behind them.

About Reactor

Reactor is a developer-focused company providing the infrastructure for real-time generative artificial intelligence (AI) video and interactive AI world models. Founded in 2025 and headquartered in San Francisco, the firm emerged from stealth on May 28, 2026, with $59 million in funding. The Series A round was led by Lightspeed Venture Partners, with participation from WndrCo, Amplify Partners, Sky9 Capital, and FPV Ventures.

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The company was co-founded by CEO Alberto Taiuti and CTO Bryce Schmidtchen. Both founders are former technical leads from the Apple Vision Pro team. Taiuti's prior experience includes co-founding Luma AI, where he served as CTO, building the infrastructure for a widely used 3D and video generation platform. The broader Reactor team comprises engineers and researchers with experience from major technology firms including Apple, Netflix, Meta, Google, and Microsoft.

Reactor's core offering is a platform that provides a unified Software Development Kit (SDK) and Application Programming Interface (API), enabling developers to build and deploy real-time, interactive AI applications with minimal code. The platform acts as a critical software layer between complex AI model labs and application developers, managing the complexity of deploying and scaling these systems. This infrastructure is designed to support a new category of media experiences that are dynamically generated and shaped by user interaction, rather than being pre-rendered. The company prioritizes interaction speed, aiming for visual latency below 50 milliseconds to enable true real-time responsiveness.

The business model is usage-based, with pricing tied to the type of model used, accessible via the SDK and API. Reactor serves developers across various sectors, with initial customer demand from media and entertainment, film and television studios, physical AI, and robotics companies. Strategic partners include Amazon Web Services (AWS) as the preferred cloud provider to handle the necessary compute infrastructure for real-time generative video workloads on a global scale.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2025
Headquarters
San Francisco, United States
Employees
13
Open positions
1
Dealroom signal
56.1/100
Industry
Media, Enterprise Software
Sub-industry
Content production
Sector
Other B2B Software, Generative AI, genAI Operation Layer, AI Model Deployment and Monitoring
Business model
SaaS
Client focus
b2b

Funding history

1 recorded event

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES AOther financing May 2026 $59M $236M Amplify Partners · WndrCo · Lightspeed Venture Partners · Abstract ↗
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Growth signals

Reactor website traffic

Latest recorded traffic for Reactor is 150K monthly website visits.

Latest monthly visits150K
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

6 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A6 investors entered at this stage

Team profiled 1 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Reactor on X, ranked by likes and reposts, corporate channels excluded.

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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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