HunyuanVideo
13B open-weight cinematic text-to-video.
Open Source 24–48 GB VRAM
- Min VRAM
- 24 GB
- GPU class
- Workstation GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free
AnimateDiff
Add motion to any SD checkpoint via a motion module.
Open Source 8–12 GB VRAMRuns locally
Actually FreeNo SignupOpen SourceWatermark-FreeHobbyist-FriendlyPlugin
Requires: ComfyUI, AUTOMATIC1111 (stable-diffusion-webui)
Visit AnimateDiffUpdated 2026-02-08 · Direct link
Hardware requirements
Runs locally · Mid GPU (12 GB)
Min VRAM
8 GB
Rec. VRAM
12 GB
Min RAM
16 GB
Rec. RAM
32 GB
Disk
25 GB
GPU class
Mid GPU
11.8+Apple Silicon ✓GPU RequiredQuant: FP16
SDXL variant pushes to 16+ GB VRAM for longer sequences.
Screenshot placeholder · AnimateDiff
What is AnimateDiff?
AnimateDiff was the first widely-adopted technique to turn frozen image-diffusion checkpoints into video models. It plugs a learned motion module into your SD 1.5 or SDXL checkpoint and animates the latent, producing 16-32 frame clips that preserve the source model's style. The grandparent of every Comfy video workflow.
Pros & cons
Pros
- Works with any SD 1.5 / SDXL checkpoint you already have
- Cheap relative to dedicated video models
- Massive workflow ecosystem in ComfyUI
Cons
- Short clips (16-32 frames); long videos need stitching
- Newer dedicated models (Wan, Hunyuan) produce higher-quality motion
What's actually free?
Apache 2.0.
✓ Actually FreeNo SignupOpen SourceWatermark-Free
Alternatives
Wan 2.2
Open-weight video diffusion from Alibaba.
Open Source 12–48 GB VRAM
- Min VRAM
- 12 GB
- GPU class
- Workstation GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free
CogVideoX 5B
Open-source text-to-video diffusion from THUDM.
Open Source 12–24 GB VRAM
- Min VRAM
- 12 GB
- GPU class
- High-end GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free