Dream-VL 7B is an open diffusion vision-language model trained on 12M multimodal data from the MAmmoTH-VL-Instruct-12M dataset. The model takes language instructions and images as input and generates language outputs.

All Dream-VL checkpoints, as well as our training codebase are released under an Apache 2.0 License.

For full details, please read our blog and the paper: Dream-VL & Dream-VLA: Open Vision-Language and Vision-Language-Action Models with Diffusion Language Model Backbone.

Model Summary

Model type: Vision-language (language, image => language)
Language(s) (NLP): en
License: apache-2.0
Finetuned from: Dream-7B, with Qwen2ViT Vision Backbone.
Pretraining Dataset: MAmmoTH-VL-Instruct-12M.
Repository: https://github.com/DreamLM/Dream-VLX
Project Page & Videos: https://hkunlp.github.io/blog/2025/dream-vlx

Getting Started

python

import torch
from transformers import AutoProcessor, AutoModel

model_name = "Dream-org/Dream-VL-7B"

model = AutoModel.from_pretrained(
    model_name,
    torch_dtype=torch.bfloat16,
    trust_remote_code=True,
).to('cuda')

processor = AutoProcessor.from_pretrained(
    model_name,
    trust_remote_code=True
)

####### Method 1
from PIL import Image
import requests
url = "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg"
image = Image.open(requests.get(url, stream=True).raw)
messages = [
    {
        "role": "user","content": [{"type": "image"}, {"type": "text", "text": "Describe this image"}]
    }
]
text = processor.apply_chat_template(
    messages, tokenize=False, add_generation_prompt=True
)
print(text)
inputs = processor(
    text=[text], images=[image], padding=True, return_tensors="pt"
)

####### Method 2: use qwen_vl_utils
# messages = [
#     {
#         "role": "user",
#         "content": [
#             {
#                 "type": "image",
#                 "image": "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg",
#             },
#             {"type": "text", "text": "Describe this image."},
#         ],
#     }
# ]
# text = processor.apply_chat_template(
#     messages, tokenize=False, add_generation_prompt=True
# )
# from qwen_vl_utils import process_vision_info
# image_inputs, video_inputs = process_vision_info(messages)
# inputs = processor(
#     text=[text],
#     images=image_inputs,
#     videos=video_inputs,
#     padding=True,
#     return_tensors="pt",
# )

inputs = inputs.to("cuda")
input_ids = inputs.pop("input_ids")
output = model.diffusion_generate(
    input_ids,
    max_new_tokens=128,
    output_history=True,
    return_dict_in_generate=True,
    steps=128,
    temperature=0.1,
    top_p=1,
    alg="maskgit_plus",
    alg_temp=0,
    use_cache=False,
    **inputs
)

generations = [
    processor.tokenizer.decode(g[len(p):].cpu().tolist())
    for p, g in zip(input_ids, output.sequences)
]

for j in range(len(messages)):
    print("output:", j, generations[j].split(processor.tokenizer.eos_token)[0])


# output: The image depicts a serene beach scene featuring a young woman and a golden retriever.
# The woman, dressed in a plaid shirt and dark pants, is seated on the sandy shore, smiling warmly at the camera.
# The golden retriever, adorned with a colorful harness, sits attentively beside her, its gaze fixed on the woman.
# The background reveals the vast expanse of the ocean, with waves gently kissing the shore. The sky above is a clear blue, suggesting a sunny day.
# The overall atmosphere exudes a sense of peace and companionship between the woman and her dog.

Citation

BibTeX:

bibtex

@article{ye2025dreamvla,
  title={Dream-VL & Dream-VLA: Open Vision-Language and Vision-Language-Action Models with Diffusion Language Model Backbone},
  author={Ye, Jiacheng and Gong, Shansan and Gao, Jiahui and Fan, Junming and Wu, Shuang} and Bi, Wei and Bai, Haoli and Shang, Lifeng and Kong, Lingpeng},
  journal={arXiv preprint arXiv:2512.22615},
  year={2025}
}