What GPU do I need to run zai-org/CogVideoX-5b-I2V?
5.6B parameters, published in BF16. View on Hugging Face
Set up CogVideoX-5b-I2VCogVideoX-5b-I2V is published by zai-org on Hugging Face, with 11,288 downloads and 321 likes to date. It's a unlisted-architecture model built for image-to-video, published natively in BF16.
VRAM required & cheapest live GPU fit
Required VRAM = weight size at each precision, plus a fixed overhead for activation memory and allocator fragmentation. Diffusion and video models carry no KV-cache. The real driver of extra memory is output resolution and frame count, which this flat overhead does not model. Full formula and assumptions: methodology.
| Precision | Weight size | Required VRAM | Cheapest live fit | GPUs needed | Est. $/hr (full fit) |
|---|---|---|---|---|---|
| BF16 | 10.5 GB | 12.6 GB | RTX A4000 | 1 | $0.167/hr |
| FP8 (quantized) | 5.2 GB | 6.3 GB | RTX 4070 Super | 1 | $0.121/hr |
| INT4 (quantized) | 2.6 GB | 3.1 GB | RTX 3060 | 1 | $0.110/hr |
A GPU is only matched to a row if its hardware supports that precision, and the primary recommendation is always a single-GPU fit when one exists.
INT4 requires a quantized checkpoint actually published for this model, check its Hugging Face page before relying on this row.
Cheapest way to run CogVideoX-5b-I2V at its published (BF16) precision: 1× RTX A4000, at $0.167/hr per GPU ($0.167/hr total). Quantizing to FP8 or INT4 (rows above) can cost less, but requires a compatible quantized checkpoint to exist for this model.
CogVideoX-5b-I2V: common questions
Does CogVideoX-5b-I2V fit on a 16 GB GPU?
Yes. At BF16 it needs 12.6 GB of VRAM, so a 16 GB card holds it with 3.4 GB to spare. A 12 GB card is not enough for it at BF16.
What is the least VRAM CogVideoX-5b-I2V can run in?
3.1 GB, at INT4 (quantized), which fits a 6 GB card, against 12.6 GB at BF16. That row assumes an INT4 checkpoint has actually been published for this model, so check its Hugging Face page before planning around it.
Does quantizing CogVideoX-5b-I2V lower the GPU bill?
Yes. At BF16 the cheapest live fit is one RTX A4000 at $0.167/hr. At INT4 (quantized) it drops to one RTX 3060 at $0.110/hr, provided a quantized checkpoint exists for it.
Weight-to-VRAM math, the fit rules, and how live prices are normalized: full methodology.
More zai-org models
- GLM-OCR (1.3B, BF16)
- GLM-4.7-Flash (31.2B, BF16)
- GLM-5.2-FP8 (753.3B, F8_E4M3)
- GLM-5.2 (753.3B, BF16)
- GLM-5-FP8 (753.9B, F8_E4M3)
- GLM-5.3-Flash (321.3B, F8_E4M3)
Related reading: RTX A4000 pricing and specs, The NVIDIA Inception program, explained, Google Colab alternatives for dedicated GPU access, Free GPU credits for students and researchers, and RunPod volume disk vs. network volume, compared.
