CogVideoX-5B (cogvideox family)
Parameters: 5 B (active:  B)
Mixture-of-experts: no
Release: 2024-08
Modality: video
Model license: CogVideoX License (commercial use: conditional)
License note: Free for research; commercial use requires registration and is capped at 1 million visits per month.
Architecture: dit (backbone 5 B)
Backbone size (GB by quant):
fp16: 11
fp8: 5.5
q4: 3.5
Additional components: name: T5-XXL text encoder
fp16_gb: 9.73
q4_gb: 2.9
offloaded: yes
VAE size: 0.5 GB
Default output: 720×480, 49 frames (~6 s)
Recommended setup: gb: 16
quant: INT8 / fp8
Memory without offload: 26 GB; offload floor: 5 GB
Device classes: nvidia, amd
Tools: Diffusers, ComfyUI
Notes: THUDM's 5B video DiT (720x480, 6s at 8fps). The diffusers docs cite ~16GB VRAM for the INT8/fp8-quantized model; the SAT bf16 no-offload path is 26GB, and full sequential CPU offload + INT8 drops the floor to ~5GB (very slow). The T5 encoder is offloaded. Custom license: free for research, commercial needs registration with a 1M-visit cap. Sources: THUDM card, diffusers CogVideoX docs, the license.