Hunyuan World Model 1.5 - Tencent Hunyuan's open-source real-time interactive world generation model

What is the Hunyuan World Model 1.5?

HY WorldPlay 1.5 is an open-source real-time interactive world generation model developed by the Tencent Hunyuan team. Users simply input text or images, and the model quickly creates their own virtual world, which can be freely explored using a keyboard, mouse, or gamepad. The model boasts three core capabilities: real-time interactive generation, long-range 3D consistency, and diverse interactive experiences. It supports high-definition video output and the generation of various scene styles. This model is the first to open-source a real-time world model framework covering the entire chain from data, training, inference, and deployment. It innovates with technologies such as dual-branch action representation and contextual memory reconstruction, bringing new breakthroughs to AI-generated content and enabling its widespread application in game development, film and television production, and embodied intelligence research.

Main functions of the Hunyuan World Model 1.5

• Real-time interactive generationThrough optimized streaming inference technology, the model can generate 720P high-definition video in real time at 24 frames per second. Users can freely control the virtual camera like playing a game and explore the AI-generated world in real time.
• Long-range 3D consistencyEmploying a reconstruction memory mechanism, the model can "remember" the 3D structure of the scene. Even if the user leaves a certain area and returns, the scene remains consistent. It supports minute-level geometric consistency generation and is suitable for high-quality 3D spatial simulation.
• Diverse interactive experiencesIt supports first-person and third-person perspectives, generates game scenes and real-world scenes of different styles, supports text-triggered events (such as explosions) and video continuation functions, and meets a variety of application needs.
• Scene export and reconstructionUsers can export the generated 3D scene as a reusable 3D point cloud, which facilitates further development and application.

Technical Principles of the Hunyuan World Model 1.5

• Two-branch action representationThis system integrates 3D camera pose estimation with discrete control commands to achieve precise interactive control. Compared to a single control method, it improves generation consistency and stability while mitigating slow convergence and control drift issues caused by inconsistent scene scales.
• Contextual memory reconstruction mechanismBy combining short-term temporal contextual memory and long-term spatial memory with "temporal reconstruction" technology, the encoding of memory frames is dynamically adjusted to strengthen the continuous influence of historical frames and ensure smooth motion and geometric consistency.
• Context Forcing Distillation StrategyAligning the memory context of teacher and student models solves the pattern collapse problem in distribution matching distillation, balances real-time performance and memory capacity, reduces error accumulation in long sequence generation, and balances speed and generation quality.
• World Compass reinforcement learning frameworkBy employing a progressive rollout strategy and a fine-grained reward function, we can simultaneously improve the accuracy of action control and the quality of visual output, significantly enhance sampling efficiency, and achieve consistency between the training and inference processes.
• Streaming inference serviceIt optimizes the latency of the entire link, including waiting, transmission and inference, and adopts technologies such as DiT and VAE hybrid parallelism, streaming decoding and transmission and model quantization. It supports long-term streaming generation of 24 frames/second and is suitable for diverse scenarios.

Project address for Hunyuan World Model 1.5

• Project official website: https://3d-models.hunyuan.tencent.com/world/
• GitHub repositoryhttps://github.com/Tencent-Hunyuan/HY-WorldPlay
• HuggingFace model libraryhttps://huggingface.co/tencent/HY-WorldPlay
• Technical Papers: https://3d-models.hunyuan.tencent.com/world/world1_5/HYWorld_1.5_Tech_Report.pdf

Application Scenarios of the Hunyuan World Model 1.5

• AI game developmentAs a smart level generator, it creates explorable game worlds in real time based on players' text descriptions, reducing development costs and enhancing the player experience.
• Film and television productionCreators can quickly generate and iterate scene designs using text commands, accelerating pre-production and reducing costs.
• Virtual Reality (VR) and Augmented Reality (AR)It generates immersive virtual environments, allowing users to explore and interact in real time using VR/AR devices, and is suitable for fields such as education, entertainment, and training.
• Embodied Intelligence ResearchIt provides a virtual training platform for embodied intelligent agents, helping to study perception, decision-making, and interaction capabilities, and improve the performance of intelligent agents.
• Architectural Design and Urban PlanningIt can quickly generate 3D models of buildings or urban environments based on the designer's description, and supports real-time modification and optimization to improve design efficiency.