CogVideoX-2B (cogvideox family)
Parameters: 2 B (active:  B)
Mixture-of-experts: no
Release: 2024-08
Modality: video
Model license: Apache-2.0 (commercial use: yes)
Architecture: dit (backbone 2 B)
Backbone size (GB by quant):
fp16: 5
fp8: 2.5
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: 8
quant: fp16 + offload
Memory without offload: 18 GB; offload floor: 4 GB
Device classes: nvidia, amd
Tools: Diffusers, ComfyUI
Notes: The Apache-2.0 CogVideoX tier (2B). The official card lists SAT fp16 no-offload at 18GB, model-offload paths around ~8GB, and a ~4GB floor with full sequential offload + INT8 + VAE tiling. The T5 encoder is offloaded. Apache-2.0, commercial OK (unlike the 5B's custom license). Anchor is the model-offload path (synthesis). Sources: THUDM card, diffusers CogVideoX docs.