Video model · wan
WA Wan 2.1 T2V 14B requirements
DIT video model · 14B params · 1280×720 (720p), 81f (~5s) · released Feb 2025. Realistic minimum to run: Nvidia GeForce RTX 4060 Ti (16GB) at Q4 GGUF.
Backbone size by precision
| Precision | Size |
|---|---|
| fp16 / bf16 | 28.6 GB |
| Q8 GGUF | 15.9 GB |
| Q4 GGUF (recommended) | 10.1 GB |
| Q2 GGUF | 6.99 GB |
Backbone weights only. Peak VRAM is dominated by the activation memory for 81 frames at 1280×720 (720p), not the file size.
Pipeline components
| Component | Size |
|---|---|
| umT5-XXL text encoder offloaded | 3.66 GB |
| VAE (3D) | 0.51 GB |
Video VAEs are larger than image VAEs because they decode a temporal stack of frames.
Run it
Wan 2.1 T2V 14B runs in ComfyUI or Diffusers. Generating more frames or higher resolution raises peak VRAM sharply; the Q4 GGUF figure is for the default 81-frame clip.
Which devices can run Wan 2.1 T2V 14B?
Apple Silicon Macs
- Apple M1 (8GB) No
- Apple M2 (16GB) No
- Apple M4 (16GB) No
- Apple M5 (16GB) No
- Apple M3 Pro (18GB) Tight
- Apple M4 (24GB) Yes
- Apple M4 Pro (24GB) Yes
- Apple M5 (32GB) Yes
- Apple M4 Pro (48GB) Yes
- Apple M5 Pro (48GB) Yes
- Apple M4 Max (64GB) Yes
- Apple M4 Max (128GB) Yes
- Apple M5 Max (128GB) Yes
- Apple M3 Ultra (256GB) Yes
RAM-only laptops
No mainstream local runtime for a 14B video model on RAM-only laptops yet.
iPhone & iPad
No mainstream local runtime for a 14B video model on iPhone & iPad yet.
Android
No mainstream local runtime for a 14B video model on Android yet.
NVIDIA GPUs
AMD GPUs
FAQ
How much VRAM does Wan 2.1 T2V 14B need?
At Q4 GGUF the realistic peak is ~12 GB, versus ~40 GB with every component resident. With aggressive CPU offload it drops to ~8 GB, much slower.
Why is peak VRAM lower than the sum of the files?
The text encoder is run once to encode your prompt, then offloaded to CPU before the frames are generated, so it is not resident at the memory peak.
Can I use Wan 2.1 T2V 14B commercially?
Yes. Wan 2.1 T2V 14B is licensed Apache-2.0, which permits commercial use.
Full-size Wan 2.1 (14B DiT, stable at 720p). Backbone bf16 is ~28.6GB; the umT5-XXL encoder is offloaded to CPU. GGUF Q4_K_M (10.1GB) + T5 on CPU runs at ~10-12GB peak; full bf16 no-offload needs ~40GB. Apache-2.0, commercial OK. Anchor is the GGUF Q4 path (synthesis). Sources: Wan-AI card, city96 14B GGUF, diffusers Wan docs.
Sources
VRAM is a sourced peak-usage anchor at Q4 GGUF (composed from component sizes, not a single measurement) for the default clip length, validated 2026-06-15. See methodology.