// GLM / CogVideoX (Z.ai) · Video generation
CogVideoX-5b: VRAM & local deployment
5.57B parameters. About 4.2 GB at 4-bit and 12.8 GB at BF16.
released 2024-08-17licence: Custom licence – read itmemory figures are estimates
01Specs
| Publisher | Z.ai (Zhipu) · zai-org |
|---|---|
| Family / series | GLM / CogVideoX (Z.ai) · CogVideoX |
| Type | Video generation (text-to-video) |
| Parameters | 5.57B Source: counted from official safetensors weights |
| Released weights | BF16 · 21.5 GBdownload |
| Licence | other · Custom licence – read itThe publisher uses its own licence; we have not classified it. Read the licence text. |
| Released | 2024-08-17 (Hugging Face repo created) |
02How much VRAM it needs (estimate)
Video models: memory grows with resolution and clip length; official repos usually list a tested GPU in the card. Weights below are the main model only.
| Precision | Weights | Weights + overhead | Smallest GPU | Mac |
|---|---|---|---|---|
| BF16 / FP16 (original) | 11.1 GB | 12.8 GB | 16GB GPU | Mac 24GB |
| FP8 / INT8 / Q8_0 | 5.9 GB | 7.0 GB | 8GB GPU | Mac 16GB |
| 4-bit (Q4_K_M / AWQ / GPTQ-Int4) | 3.4 GB | 4.2 GB | 8GB GPU | Mac 16GB |
Bits per weight: BF16 16, FP8 8.5, 4-bit 4.85. “Fits” = total ≤ 90% of memory; Mac GPU can use ~2/3 of unified memory (≤36GB) or ~3/4 (larger). For MoE, all experts must be in memory, so size by total parameters. Method →
03How to run it
Only runtimes the publisher or the runtime’s official library names for this model.
- Transformers — mentioned in the official model card
- Diffusers — mentioned in the official model card
04Official repositories & quantised builds
1 official repo(s) from zai-org.
- CogVideoX-5b main
05Other GLM / CogVideoX (Z.ai) models
All 35 →| Model | Params | 4-bit total | Released |
|---|---|---|---|
| CogVideoX-2b · same series | 1.69B | 1.6 GB | 2024-08-05 |
| GLM-5.3 | 753.3B | 504 GB | 2026-08-25 |
| GLM-5.3-Flash | 320B / 18B | 214 GB | 2026-08-25 |
| GLM-5.2 | 753.3B | 504 GB | 2026-06-16 |
| SCAIL-2 | — | — | 2026-06-09 |
| GLM-5.1 | 753.9B | 504 GB | 2026-04-03 |
| GLM-5 | 744B / 40B | 497 GB | 2026-02-11 |
| GLM-OCR | 1.32B | 1.9 GB | 2026-01-30 |
| GLM-4.7-Flash | 31.2B / 3B | 21.8 GB | 2026-01-19 |
06Sources
Data checked 2024-11-23. Parameters, context and licence are copied from the official repository; memory figures are our estimates.