Navigable world model
Hy-Nomas API
Silent generated video on main_video. Served on Windflow as a streaming session you can plug into your product and pay for by the second.
Overview
What Hy-Nomas does
Hy-Nomas is an open interactive world model from Tencent Hunyuan. Describe a scene in text and Windflow streams a world from it at 832 × 480 and 24 fps, two seconds at a time: held keys move and turn the view, and text events change what happens next without restarting the world.
A session keeps the model running: connect once, steer it with text prompts and movement and look controls while it runs, and receive the live stream back on a named output track.
Every model in the catalog speaks the same typed session protocol, so switching between models changes the controls you send, not how you integrate.
- Architecture
- Distilled Hy-Nomas DiT with a stable-prefix PixelUMM decoder
- Resolution
- 832 × 480
- Playout
- 24 fps delivery target
- Chunk
- 48 requested frames; variable committed prefix and a finalized tail
- Control latency
- Prompt and camera changes take effect at the next segment boundary, a few seconds after they are sent
- Inputs
- Text and persistent camera movement/look snapshots
- Outputs
- Silent generated video on main_video
- Delivery
- WebSocket (H.264) · WebRTC
- Session protocol
- sdk.realtime.v2
- Price
- $0.0047 per billable second
$0.0047
Per billable second
Meter starts when generation begins
$17.00
Per billable hour
The same rate, held for an hour
Preview
Runtime status
Capacity is brought up on demand
Private beta
Access
Request access or a live demo
Use cases
What teams build with Hy-Nomas
- Explorable scenes opened from a single text description.
- Interactive stories where each turn adds an event to the same world.
- Walking a location with the keyboard before committing to a shot.
- Comparing text-opened and image-seeded world models on one protocol.
Provenance
Where Hy-Nomas comes from
The model and its code are published by the upstream authors. Windflow runs it behind one session API and bills per billable second.
- Tencent-Hunyuan/Hy-Nomas on GitHubLicence · Apache-2.0
- tencent/Hy-Nomas on Hugging FaceLicence · Apache-2.0
Compare
Hy-Nomas next to similar models
| Model | Inputs | Output | Price per billable second |
|---|---|---|---|
| Hy-Nomas | Text and persistent camera movement/look snapshots | Silent generated video on main_video | $0.0047 |
| LingBot-World 2.0 | A seed image (uploadFile) and a text prompt, plus persistent WASD movement and look controls | A navigable stream on main_video you steer in real time | $0.0024 |
| DreamX-World-5B | A seed image, a text prompt, and movement/camera-control state | A controllable world rollout on main_video | $0.0023 |
| ABot-World-0-5B | A seed image, a text prompt, and persistent movement/camera key state | A third-person navigable world stream on main_video | $0.0023 |
FAQ
Questions about Hy-Nomas
- Does Hy-Nomas need a seed image?
- No. A text prompt opens the world; held keys and later prompts steer it.
- How do controls reach the model?
- Keys and text events are sampled at the start of each two-second segment, so a change shows from the next segment on.
- How long is one world?
- Up to 60 seconds, 1,440 frames at 24 fps. Open the next world with reset or a new session.
- How much does Hy-Nomas cost on Windflow?
- Hy-Nomas costs $0.0047 per billable session-second ($17.00/hr of billable time). Billing starts at the session's first generation_started event and stops when the session is released or ends. Queueing, worker startup, time before generation starts and the documented reconnect grace are not billed. After generation starts, paused or unwatched time remains billable; release the owner session to stop the meter. There is no subscription.
- How do I get access to Hy-Nomas?
- Windflow is in private beta. Request access from the sign-up page, or ask for a live demo of Hy-Nomas. Approved accounts start with $5 and four concurrent sessions.
- Is Hy-Nomas always running?
- No. Model capacity is brought up on demand rather than kept standing. Live readiness for each model is published at api.windflow.online/v1/status, and a live demo can be arranged on request.
Guides and comparisons
Other models