---
title: "Tencent's HY-World 1.5 Open-Sources Real-Time AI World Generation at 24 FPS"
subtitle: "Tencent open-sources WorldPlay, the first real-time interactive world model that generates explorable 3D environments at 24 FPS with long-term geometric consistency"
url: "https://alphasignal.ai/news/tencent-s-hy-world-1-5-open-sources-real-time-ai-world-generation-at-24-fps"
author: "AlphaSignal Newsroom"
author_url: "https://alphasignal.ai/editorial-team"
company: "Tencent Hy"
company_url: "https://alphasignal.ai/company/tencenthunyuan"
published: "2026-06-10T07:10:23.000Z"
updated: "2026-06-20T07:58:31.542Z"
type: "Repo"
topics:
  - "Video"
  - "Open Source"
subtopics:
  - "World Models"
  - "Video Generation"
  - "Video Understanding"
upvotes: 11
source_url: "https://github.com/Tencent-Hunyuan/HY-WorldPlay"
comments: 0
truncated: true
---

# Tencent's HY-World 1.5 Open-Sources Real-Time AI World Generation at 24 FPS

> Tencent open-sources WorldPlay, the first real-time interactive world model that generates explorable 3D environments at 24 FPS with long-term geometric consistency

Building a world model that is both fast enough to interact with in real time _and_ geometrically coherent over long distances has been an open problem for years. Tencent's Hunyuan team just open-sourced [HY-World 1.5 (WorldPlay)](https://github.com/Tencent-Hunyuan/HY-WorldPlay), a streaming video diffusion model that claims to solve both at once: 24 FPS interactive generation from a single image or text prompt, with a scene that remembers its own geometry when you walk away and come back.

While HY-World 1.0 could generate immersive 3D worlds, it relied on a lengthy offline generation process. HY-World 1.5 bridges this gap with WorldPlay, a streaming video diffusion model that enables real-time, interactive world modeling with long-term geometric consistency. The result feels closer to a game engine than a video generator: users can control the virtual camera in real time using a keyboard, mouse, or controller, exploring AI-generated scenes as if playing a game.

## The speed-memory wall, cracked

Previous world models could generate impressive 3D worlds but typically through a slow, offline process. Achieving real-time interaction meant sacrificing the long-term consistency of the environment -- objects would morph, textures would flicker, and the geometry would drift over time. WorldPlay attacks this with four interlocking ideas.

* **Dual Action Representation:** A Dual Action Representation enables robust action control in response to keyboard and mouse inputs. Camera moves are encoded both as discrete tokens and as continuous 6-DoF pose deltas, giving the model two complementary signals for the same action.
* **Reconstituted Context Memory:** Reconstituted Context Memory dynamically rebuilds context from past frames and uses temporal reframing to keep geometrically important but long-past frames accessible, effectively alleviating memory attenuation. Think of it as a smart cache that prioritizes the frames that anchor the scene's 3D structure, not just the most recent ones.

_Preview only. Full text requires an AlphaSignal Pro account._

## Sources

- [HY-WorldPlay GitHub Repository](https://github.com/Tencent-Hunyuan/HY-WorldPlay)
- [tencent/HY-WorldPlay on Hugging Face](https://huggingface.co/tencent/HY-WorldPlay)
- [HY-World 1.5 Tech Report (PDF)](https://3d-models.hunyuan.tencent.com/world/world1_5/HYWorld_1.5_Tech_Report.pdf)
- [Real-Time AI World Generation: Tencent's HY-World 1.5](https://studio.aifilms.ai/blog/hunyuan-world)
- [HY-World 1.5 (WorldPlay): A Game-Changer for Real-Time Interactive World Models](https://story321.com/blog/worldplay)