AOpen
SkyReels V2
Skywork AI
First open model for infinite-length video. Best human rendering in open source.
AOpen
Wan 2.1
Alibaba (Tongyi Lab)
The foundation that started it all. 1.3B variant runs on virtually any GPU. First open model to beat closed-source across benchmarks.
Pick SkyReels V2 if…
You want long-form AI films, human-centric content, or short films and ads.
Pick Wan 2.1 if…
You want consumer GPU workflows, academic research, or Chinese + English text-in-video.
Specifications
Maker
Skywork AI
Alibaba (Tongyi Lab)
Source Type
Open Source
Open Source
License
Open Source
Apache 2.0
Architecture
AR Diffusion-Forcing
Flow Matching DiT + 3D Causal VAE
Parameters
14B
14B (also 1.3B variant)
Max Resolution
720p
720p
Max Duration
30s+ (infinite)
5s
FPS
24
24
Native Audio
No
No
ComfyUI Support
No
Yes
Fine-tunable
Yes
Yes
Min VRAM
40GB+ (A100/H100)
8.19GB (1.3B) / 24GB+ (14B)
Cost / Second
Self-host
Self-host
Inputs
T2V, I2V
T2V (14B/1.3B), I2V (14B), FLF2V, VACE, V2A
On Floyo
No
Yes
Strengths & Trade-offs
SkyReels V2
Strengths
- +First infinite-length open model
- +10M+ film/TV training
- +best open human faces
Trade-offs
- -Heavy GPU req
- -no ComfyUI
- -newer community
- -720p cap
Best For
- →Long-form AI films
- →human-centric content
- →short films and ads
Wan 2.1
Strengths
- +SOTA open-source at launch
- +1.3B model runs on any consumer GPU (8.19GB VRAM)
- +first video model with Chinese + English text generation
- +Wan-VAE encodes unlimited-length 1080P
- +T2V/I2V/Video Editing/T2I/V2A all supported
Trade-offs
- -720p max
- -5s duration
- -1.3B quality limited
- -no native audio generation
- -superseded by 2.2 on quality
Best For
- →Budget local deployment
- →consumer GPU workflows
- →academic research
- →Chinese + English text-in-video