LongCat-Video-Avatar 1.5

Meituan LongCat Team

Technique Report Code 🤗 Hugging Face

An expressive avatar model built upon LongCat-Video

Introduction Video

Introduce what LongCat-Video-Avatar 1.5 is, why it upgrades the 1.0 release, and how the model combines stable avatar generation with practical inference speed.

Stability and Consistency

Demonstrate stronger mouth-shape accuracy, smooth expression transitions, identity consistency, and coherent full-body motion across long speaking shots and hand-object interactions.

Singing and Performance

Singing examples for dynamic motion, musical expression, and stable full-body or upper-body performance.

Animation

Animation examples with expressive motion, stylized characters, and stable audio-driven performance.

Multi-Person Interaction

Multi-speaker and group interaction cases with stable identities and natural turn-taking behavior.

Commercial Model Comparison

Compare LongCat-Video-Avatar 1.5 with HeyGen, Kling Avatar 2.0, and OmniHuman-1.5 under the same or similar inputs, focusing on stability, consistency, and natural lip motion.

Lip-Sync

LongCat-Video-Avatar 1.5

HeyGen

Kling Avatar 2.0

OmniHuman-1.5

Singing

LongCat-Video-Avatar 1.5

HeyGen

Kling Avatar 2.0

OmniHuman-1.5

3D Animation

LongCat-Video-Avatar 1.5

HeyGen

Kling Avatar 2.0

OmniHuman-1.5

Performance

LongCat-Video-Avatar 1.5

HeyGen

Kling Avatar 2.0

OmniHuman-1.5

LongCat-Video-Avatar 1.0 v.s. 1.5

Highlight the upgrade from 1.0 to 1.5: better mouth-shape accuracy, stronger long-video identity preservation, broader interactive scenarios, and faster 8-step generation.

LongCat-Video-Avatar 1.0

LongCat-Video-Avatar 1.5

LongCat-Video-Avatar 1.0

LongCat-Video-Avatar 1.5

LongCat-Video-Avatar 1.0

LongCat-Video-Avatar 1.5

Ethical Considerations

Part of images and audios are derived from real videos solely to demonstrate the capabilities of this research, e.g., expressions, gestures, and naturalness. The generated content is for academic use only and commercial use is not permitted. If there are any concerns, please contact us (zhangyong202303@gmail.com) and we will delete it in time.