Reactor
About
About Reactor
Reactor provides cloud inference and streaming infrastructure for developers building with real-time world models and generative video. A unified SDK and API connect applications to models running on its GPU infrastructure, combining inference with a streaming layer for interactive sessions. Developers can use supported models or deploy their own, with usage-based pricing that varies by model.
The platform serves media and entertainment applications, with its robotics APIs offered in beta. For robotics, it can run computationally demanding policies remotely and stream observations and actions between the cloud and a physical system, or serve world models as closed-loop environments for policy training and evaluation. Overworld uses Reactor to deliver its interactive world models. Co-founders Alberto Taiuti and Bryce Schmidtchen previously worked as technical leads on Apple Vision Pro; Taiuti also co-founded Luma AI. Reactor is headquartered in San Francisco.
Funding
- 2026-10-05 - Series A extension - NVIDIA and Sapphire Ventures join Reactor’s Series A extension
Reactor announced that NVIDIA and Sapphire Ventures joined its Lightspeed-led Series A to scale real-time world-model infrastructure, with the added investment amount undisclosed. - source: finance.yahoo.com
- 2026-05-28 - Seed and Series A cumulative disclosure - Reactor emerges from stealth with seed and Series A backing
Reactor disclosed combined seed and Series A backing for its real-time world-model infrastructure. - source: reactor.inc
Investors
- Lightspeed Venture Partners - Lead - VC - 2 funding events - repeat backer - first seen 2026-05-28 - latest 2026-10-05
- Amplify Partners - Participant - VC - 1 funding event - first seen 2026-05-28
- FPV Ventures - Participant - VC - 1 funding event - first seen 2026-05-28
- NVIDIA - Participant - Unknown - 1 funding event - first seen 2026-10-05
- Sapphire Ventures - Participant - VC - 1 funding event - first seen 2026-10-05
- Sky9 Capital - Participant - VC - 1 funding event - first seen 2026-05-28
- WndrCo - Participant - Unknown - 1 funding event - first seen 2026-05-28
Team
- Alberto Taiuti - Co-founder and Chief Executive Officer
- Bryce Schmidtchen - Co-founder and Chief Technology Officer
Resources
Curated durable documents and official technical references.
- Reactor SDK and API documentation
WEB · Reactor platform · Reactor
Source
Timeline
Events
- 2026-10-05 - Funding - NVIDIA and Sapphire Ventures join Reactor’s Series A extension
Cloud inference and low-latency streaming are delivered through a unified SDK and API for interactive models. Robotics workflows include serving policies remotely and using world models as closed-loop environments for training and evaluation. Developers can use open-source or customer-owned models, with usage-based pricing that varies by model.
Source - 2026-05-28 - Funding - Reactor emerges from stealth with seed and Series A backing
WndrCo, Amplify Partners, Sky9 Capital and FPV Ventures joined lead investor Lightspeed Venture Partners. Co-founders Alberto Taiuti and Bryce Schmidtchen previously worked as technical leads on Apple Vision Pro; Taiuti also co-founded Luma AI. The platform provides a unified SDK and API for interactive world models, with usage-based pricing by model.
Source
Relations
Relationships
- Amazon Web Services
Partner - Reactor and AWS collaborate on Trainium optimization and infrastructure for real-time world models.
Context
Comparable profiles
- Physical Intelligence
stack adjacency - Robot World Model Platform
- XYZ Embodied AI
stack adjacency - Robot World Model Platform
- Qianjue Technology
stack adjacency - Robot World Model Platform
- Wuwen Zhike
stack adjacency - Robot World Model Platform
- ForgeAI
stack adjacency - Robot World Model Platform
- Corenetic AI
stack adjacency - Robot World Model Platform
Shared workflows
- DexForce
workflow adjacency - Embodied World Model Training
- Ropedia
workflow adjacency - Embodied World Model Training
- Aether AI
workflow adjacency - Embodied World Model Training
- Worldmodeldata
workflow adjacency - Embodied World Model Training
- MAUM.AI
workflow adjacency - Embodied World Model Training
- Noetive
workflow adjacency - Embodied World Model Training
- XIRRA
workflow adjacency - Embodied World Model Training
- Stanhope AI
workflow adjacency - Embodied World Model Training
Context tags
- Embodied world model training - Workflow - https://www.reactor.inc/blog/nvidia-sapphire-ventures-join-reactor-series-a -- World-model simulated environments support policy training and evaluation; workflow adjacency only.
- Robot world model platform - Stack Layer - https://www.reactor.inc/blog/nvidia-sapphire-ventures-join-reactor-series-a -- Cloud infrastructure serves world models and robot policies; not an independently developed robot…