CogVideoX-5B icon

CogVideoX-5B

Open weights
Tsinghua & ZhipuAI

CogVideoX-5B is a 5-billion parameter open-source video generation model developed jointly by Tsinghua University and ZhipuAI that produces high-quality, temporally consistent videos from text descriptions and image inputs.

Text to Video
Image to Video

Key Highlights

5 Billion Parameter Video Generation

Generates high-quality and temporally consistent videos with a 5 billion parameter transformer architecture.

Text-Based Video Creation

Democratizes creative video content creation by generating videos directly from natural language descriptions.

Open Source Access

Released as fully open source, freely available for use by researchers and developers worldwide.

Temporal Consistency

Produces natural-looking videos by maintaining consistent motion and visual continuity across video frames.

About

CogVideoX-5B is a 5-billion parameter text-to-video AI model developed by Tsinghua University and Zhipu AI. As one of the most powerful options among open-source video generation models, CogVideoX-5B can generate high-quality, consistent, and dynamic videos from text descriptions. Serving as the flagship model of the CogVideoX family, it delivers significantly higher visual quality and motion coherence compared to its 2B variant and is recognized as one of the standard-setting models in the open-source video generation landscape.

The model demonstrates superior performance in temporal consistency using 3D VAE and expert transformer architecture. The 3D causal VAE processes video data as spatiotemporal volumes, strengthening frame-to-frame consistency throughout generated sequences and providing much more natural transitions compared to traditional frame-based approaches. Expert transformer blocks provide efficient video generation through adaptive LayerNorm and expert attention mechanisms. The T5-XXL text encoder guarantees accurate interpretation of complex and detailed text prompts, enabling the model to successfully convert even nuanced scene descriptions into video format with high fidelity. CogVideoX-5B can generate videos up to 6 seconds at 720x480 pixel resolution with a frame rate of 8 FPS.

Among the model's strengths are realistic depiction of complex movements, handling of multi-object interactions, and animations that conform to physical rules and natural dynamics. It produces particularly consistent results in dynamic scenes such as human movements, animal behaviors, and natural phenomena. The training dataset consists of a large-scale collection of filtered and caption-enriched videos, and this comprehensive data foundation is what enables the model to generalize effectively across different content types. The data curation process involves filtering out low-quality and inappropriate content and enriching the remaining videos with detailed text descriptions.

On the VBench benchmark, CogVideoX-5B achieves high scores in motion quality, temporal coherence, and text alignment categories, consistently ranking among the top open-source video generation models available. In text-video alignment metrics specifically, it demonstrates a clear advantage over competitors thanks to the T5-XXL encoder's deep language understanding capacity. The model delivers strong results in accurately composing complex scenes and coherently animating interactions between multiple objects, and this performance has made it a frequently cited model in the research community.

The CogVideoX-5B-I2V variant extends the model's use cases by adding image-to-video generation support for greater creative flexibility. Users can provide a reference image and generate videos that animate the scene depicted in that image. This feature makes the model suitable for both text-based and image-based video generation workflows. Additionally, a vid2vid mode offers the ability to transform and stylize existing videos, further broadening its creative applications. This multi-modal approach significantly enhances the model's versatility across creative applications.

Available as open source through Hugging Face, CogVideoX-5B integrates seamlessly with the Diffusers library and can be quickly incorporated into Python-based workflows. It offers optimized inference support on A100 GPUs and can be incorporated into visual workflows through ComfyUI integration. The model serves as a powerful tool for video content production, advertising prototyping, educational materials, creative art projects, and rapid experimentation. Zhipu AI's ongoing development efforts and active community contributions continue to expand the model's ecosystem and capabilities, positioning it as one of the cornerstones of open-source video generation.

Use Cases

1

Short Video Content Generation

Creating short video clips from text descriptions for social media, advertising, and marketing.

2

Concept Video and Storyboard

Accelerating pre-visualization by creating concept videos for film and advertising projects.

3

Educational Material Production

Enriching learning experience by creating visual explanation videos for educational purposes.

4

Research and Development

Academic research and new method development as an open source model in video generation.

Pros & Cons

Pros

  • Powerful open-source video model with 5 billion parameters
  • Efficient video compression with 3D causal VAE
  • Supports text-to-video, video continuation, and image-to-video
  • Can run on mid-range GPUs like RTX 3060
  • Research infrastructure from Tsinghua University and Zhipu AI

Cons

  • Limited to 720x480 resolution — below HD
  • 6-second video duration limit
  • 8 FPS frame rate — low for smooth video
  • Temporal inconsistencies in complex scenes

Technical Details

Parameters

5B

Architecture

3D VAE + Diffusion Transformer

Training Data

Proprietary video dataset

License

Apache 2.0

Features

  • 5B parameters
  • 6s video
  • Text-to-video
  • Open source
  • 720x480 resolution
  • Temporal consistency

Benchmark Results

MetricValueCompared ToSource
Çözünürlük720×480, 6 saniyeAnimateDiff: 512×512, 2 saniyeCogVideoX Paper (arXiv:2408.06072)
FVD (UCF-101)189.5ModelScope T2V: 410.2Papers With Code
Parametre Sayısı5B (3D DiT)AnimateDiff: 1.5BHugging Face Model Card
FPS8 FPS (native)—CogVideoX Paper

Available Platforms

GitHub
HuggingFace
Replicate

Frequently Asked Questions

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AnimateDiff

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Open weights
CogVideoX icon

CogVideoX

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CogVideoX is an open-source video generation model jointly developed by Tsinghua University and ZhipuAI that utilizes an expert transformer architecture to produce high-quality videos from text descriptions. Released in August 2024, CogVideoX represents a significant advancement in open-source video generation, offering capabilities that approach proprietary models while remaining freely available for research. Built on a 5 billion parameter transformer architecture that processes text and visual tokens through specialized expert layers, it enables efficient computation while maintaining high output quality. CogVideoX employs a 3D causal VAE for video encoding and decoding, capturing both spatial and temporal information in a unified latent space, resulting in videos with smooth motion transitions and consistent visual coherence. The model supports variable-length video generation and multiple resolution outputs, providing flexibility for different use cases. CogVideoX demonstrates strong performance in generating videos with accurate motion dynamics, scene transitions, and visual storytelling elements, handling both simple prompts and complex narrative scenarios. The training approach incorporates progressive resolution scaling and temporal consistency losses that maintain stable generation quality across different durations. Available under the Apache 2.0 license on Hugging Face, CogVideoX can be accessed through fal.ai and Replicate, and can be run locally with sufficient GPU resources. The model has been well-received in the research community as a strong open-source baseline for video generation, enabling academic studies and commercial applications that require transparent, modifiable video generation capabilities without proprietary API constraints.

Open weights
Gemini Omni Flash icon

Gemini Omni Flash

Status unknown
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Gemini Omni Flash is Google DeepMind's groundbreaking multimodal AI model that generates physics-aware video with synchronized audio from any combination of text, images, video, and audio inputs. Announced at Google I/O 2026, it represents a paradigm shift from traditional text-to-video models by enabling conversational, iterative video editing — users can refine scenes through natural language without regenerating from scratch. The model maintains character consistency and scene memory across multiple editing rounds, preserves identity and voice throughout sequences, and understands real-world physics including gravity, collisions, and material properties. Omni Flash supports cinematic camera controls (dolly zoom, over-shoulder shots, tracking), accurate text rendering with word-by-word animation, multi-input synthesis (combining videos, images, audio, and storyboards), and style transfer across artistic mediums including anime, claymation, and watercolor. Built on Gemini's training data, it carries significantly more world knowledge than standalone video models like Veo, enabling it to visualize complex concepts from quantum computing to historical events without exhaustive prompting. Available through the Gemini app, Google Flow, and Google AI Studio, it produces clips up to 10 seconds with invisible SynthID watermarking for content authenticity.

Proprietary
Hailuo MiniMax icon

Hailuo MiniMax

MiniMax|N/A

Hailuo MiniMax is a high-quality video generation model developed by the Chinese AI company MiniMax, distinguished by its impressive motion quality and ability to generate visually compelling video content with natural, fluid movement dynamics. Released in September 2024, Hailuo gained international recognition for producing some of the most realistic motion patterns among AI video models, particularly excelling in human movement, facial expressions, and complex physical interactions. The model supports both text-to-video and image-to-video modes, accepting natural language descriptions and reference images to create short clips with consistent visual quality and temporal coherence. Hailuo's transformer-based architecture processes multimodal inputs to generate content demonstrating strong understanding of physical world dynamics, including gravity, momentum, fabric movement, and environmental interactions. The model handles diverse content from photorealistic scenes to stylized artistic content, with particular strength in cinematic quality footage with professional-grade lighting and composition. Hailuo supports various output resolutions and aspect ratios suitable for social media, advertising, and creative projects across different platforms. The model demonstrates competitive performance in international benchmarks, often ranking alongside or above Western competitors in motion quality. As a proprietary model, Hailuo is accessible through MiniMax's platform and through fal.ai and Replicate, enabling integration into custom applications and production workflows. The model represents the growing strength of Chinese AI research in generative video technology.

Proprietary

Quick Info

Parameters5B
TypeDiffusion Transformer
LicenseApache 2.0
Released2024-08
Architecture

3D VAE + Diffusion Transformer

CreatorTsinghua & ZhipuAI

Links

Tags

video
open-source
cogvideo
5b
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