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Reactor

Reactor is the developer platform for real-time AI — the missing infrastructure layer for real-time world models. We make real-time generative video accessible to developers, so they can build interactive AI experiences across media and entertainment, physical AI, and robotics.

Their llms.txt

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# Reactor

> Reactor is the developer platform for real-time AI — the missing infrastructure layer for real-time world models. We make real-time generative video accessible to developers, so they can build interactive AI experiences across media and entertainment, physical AI, and robotics.

World models are a shift in AI: from a tool you prompt into an experience you can step inside and interact with in real time. Reactor provides the platform — models, SDKs, and infrastructure — for building those experiences. Applications built on Reactor are already in developers' hands. Founded in 2026, Reactor emerged from stealth with $59M led by Lightspeed Venture Partners, with participation from WndrCo, NVentures (NVIDIA), Amplify Partners, and others.

- Website: https://www.reactor.inc
- Docs: https://docs.reactor.inc (full SDK reference + its own llms.txt at https://docs.reactor.inc/llms.txt)
- GitHub: https://github.com/reactor-team
- Contact: team@reactor.inc

Every page linked below also serves clean markdown: request it with the `Accept: text/markdown` header to get token-efficient text instead of rendered HTML.

## SDK Quickstart

Reactor ships a **JavaScript SDK** (React components/hooks + an imperative API) and a **Python SDK** (async, decorator-based) for connecting to AI video models running on Reactor's cloud.

The fastest way to start: scaffold a ready-to-run app with the `create-reactor-app` CLI — no manual setup.

```bash
npx create-reactor-app my-app --model=helios   # scaffold a starter app, then: cd my-app && npm run dev
```

Or add the SDK to an existing project:

```bash
npm install @reactor-team/js-sdk   # JavaScript / TypeScript
pip install reactor-sdk            # Python
```

Packages: [`@reactor-team/js-sdk`](https://www.npmjs.com/package/@reactor-team/js-sdk) on npm · [`reactor-sdk`](https://pypi.org/project/reactor-sdk/) on PyPI.

**Available models** — Reactor is an inference host; the "Built by" column credits the upstream lab.

| Model | Built by | Description |
|-------|----------|-------------|
| EdenLive | Tripo | Restyle games and live video with AI. |
| MiniMax FastH3 Omni | MiniMax + Hao AI Lab | Faster-than-realtime video generation with text, audio and image input. |
| Vidu S2-Avatar | Vidu | Talk live with a character made from one photo. |
| Vidu S2-Editing | Vidu | Edit a live video from one reference image. |
| H3 Reference Turbo Realtime | MiniMax | Video with synchronized audio, cast from one to nine ordered reference images. |
| MiniMax FastH3 | MiniMax + Hao AI Lab | Real-time video with synchronized audio, generated faster than you can watch. |
| Visko Orbis-Stable | Visko | Prompt-steerable video with realtime audio. |
| Visko Orbis-Dynamic | Visko | Realtime video that switches resolution mid-run, up to 4K. |
| LTX-Avatar | Lightricks | Bring a portrait to life — it speaks your script in real time, voice and lip-synced video generated together. |
| X2 | XMAX | Real-time streaming video-to-video editing. |
…

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