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• Resolution: Width and height must be between 512px and 2048px, divisible by 32, and ensure the maximum number of pixels does not exceed 2^21 px.
• Precision: BF16 / FP32 (FP16 is not supported as it will cause overflow resulting in completely black images)

Using BF16 precision with batchsize=4 for testing, the memory usage is shown in the table below:

Resolution	enable_model_cpu_offload OFF	enable_model_cpu_offload ON	enable_model_cpu_offload ON Text Encoder 4bit
512 * 512	33GB	20GB	13G
1280 * 720	35GB	20GB	13G
1024 * 1024	35GB	20GB	13G
1920 * 1280	39GB	20GB	14G

First, ensure you install the diffusers library from source.

pip install git+https://github.com/huggingface/diffusers.git
cd diffusers
pip install -e .

Then, run the following code:

from diffusers import CogView4Pipeline

pipe = CogView4Pipeline.from_pretrained("THUDM/CogView4-6B", torch_dtype=torch.bfloat16)

# Open it for reduce GPU memory usage
pipe.enable_model_cpu_offload()
pipe.vae.enable_slicing()
pipe.vae.enable_tiling()

prompt = "A vibrant cherry red sports car sits proudly under the gleaming sun, its polished exterior smooth and flawless, casting a mirror-like reflection. The car features a low, aerodynamic body, angular headlights that gaze forward like predatory eyes, and a set of black, high-gloss racing rims that contrast starkly with the red. A subtle hint of chrome embellishes the grille and exhaust, while the tinted windows suggest a luxurious and private interior. The scene conveys a sense of speed and elegance, the car appearing as if it's about to burst into a sprint along a coastal road, with the ocean's azure waves crashing in the background."
image = pipe(
    prompt=prompt,
    guidance_scale=3.5,
    num_images_per_prompt=1,
    num_inference_steps=50,
    width=1024,
    height=1024,
).images[0]

image.save("cogview4.png")

We've tested on multiple benchmarks and achieved the following scores:

Model	Overall	Global	Entity	Attribute	Relation	Other
SDXL	74.65	83.27	82.43	80.91	86.76	80.41
PixArt-alpha	71.11	74.97	79.32	78.60	82.57	76.96
SD3-Medium	84.08	87.90	91.01	88.83	80.70	88.68
DALL-E 3	83.50	90.97	89.61	88.39	90.58	89.83
Flux.1-dev	83.79	85.80	86.79	89.98	90.04	89.90
Janus-Pro-7B	84.19	86.90	88.90	89.40	89.32	89.48
CogView4-6B	85.13	83.85	90.35	91.17	91.14	87.29

Model	Overall	Single Obj.	Two Obj.	Counting	Colors	Position	Color attribution
SDXL	0.55	0.98	0.74	0.39	0.85	0.15	0.23
PixArt-alpha	0.48	0.98	0.50	0.44	0.80	0.08	0.07
SD3-Medium	0.74	0.99	0.94	0.72	0.89	0.33	0.60
DALL-E 3	0.67	0.96	0.87	0.47	0.83	0.43	0.45
Flux.1-dev	0.66	0.98	0.79	0.73	0.77	0.22	0.45
Janus-Pro-7B	0.80	0.99	0.89	0.59	0.90	0.79	0.66
CogView4-6B	0.73	0.99	0.86	0.66	0.79	0.48	0.58

Model	Color	Shape	Texture	2D-Spatial	3D-Spatial	Numeracy	Non-spatial Clip	Complex 3-in-1
SDXL	0.5879	0.4687	0.5299	0.2133	0.3566	0.4988	0.3119	0.3237
PixArt-alpha	0.6690	0.4927	0.6477	0.2064	0.3901	0.5058	0.3197	0.3433
SD3-Medium	0.8132	0.5885	0.7334	0.3200	0.4084	0.6174	0.3140	0.3771
DALL-E 3	0.7785	0.6205	0.7036	0.2865	0.3744	0.5880	0.3003	0.3773
Flux.1-dev	0.7572	0.5066	0.6300	0.2700	0.3992	0.6165	0.3065	0.3628
Janus-Pro-7B	0.5145	0.3323	0.4069	0.1566	0.2753	0.4406	0.3137	0.3806
CogView4-6B	0.7786	0.5880	0.6983	0.3075	0.3708	0.6626	0.3056	0.3869

Model	Precision	Recall	F1 Score	Pick@4
Kolors	0.6094	0.1886	0.2880	0.1633
CogView4-6B	0.6969	0.5532	0.6168	0.3265

🌟 If you find our work helpful, please consider citing our paper and leaving valuable stars

@article{zheng2024cogview3,
  title={Cogview3: Finer and faster text-to-image generation via relay diffusion},
  author={Zheng, Wendi and Teng, Jiayan and Yang, Zhuoyi and Wang, Weihan and Chen, Jidong and Gu, Xiaotao and Dong, Yuxiao and Ding, Ming and Tang, Jie},
  journal={arXiv preprint arXiv:2403.05121},
  year={2024}
}

This model is released under the Apache 2.0 License.