Instructions to use jankin123/3DThinker-Mindcube with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use jankin123/3DThinker-Mindcube with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("image-text-to-text", model="jankin123/3DThinker-Mindcube")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
pipe(text=messages)

# Load model directly
from transformers import AutoProcessor, AutoModelForImageTextToText

processor = AutoProcessor.from_pretrained("jankin123/3DThinker-Mindcube")
model = AutoModelForImageTextToText.from_pretrained("jankin123/3DThinker-Mindcube")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
inputs = processor.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(processor.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps

vLLM

How to use jankin123/3DThinker-Mindcube with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "jankin123/3DThinker-Mindcube"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "jankin123/3DThinker-Mindcube",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'

Use Docker

docker model run hf.co/jankin123/3DThinker-Mindcube

SGLang

How to use jankin123/3DThinker-Mindcube with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "jankin123/3DThinker-Mindcube" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "jankin123/3DThinker-Mindcube",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "jankin123/3DThinker-Mindcube" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "jankin123/3DThinker-Mindcube",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'

Docker Model Runner
How to use jankin123/3DThinker-Mindcube with Docker Model Runner:
```
docker model run hf.co/jankin123/3DThinker-Mindcube
```

3DThinker-Mindcube

This repository contains the stage 1 model checkpoint for 3DThinker, as presented in the paper Think with 3D: Geometric Imagination Grounded Spatial Reasoning from Limited Views.

3DThinker is a framework that enables Vision-Language Models (VLMs) to exploit geometric information within images for 3D spatial reasoning, simulating human-like spatial imagination without requiring explicit 3D prior inputs or labeled 3D training data.

Paper: Think with 3D: Geometric Imagination Grounded Spatial Reasoning from Limited Views
Code: GitHub - zhangquanchen/3DThinker

Introduction

The model was trained on Mindcube_Train and tested on MindCube-Tiny.
This model corresponds to stage 1 training (supervised alignment of 3D latents) of Qwen2.5-3B-VL.
Note that Tab. 2 in the paper is trained on a different training data configuration.

Bibtex

If you find 3DThinker helpful for your work, please cite:

@article{chen2025think,
  title={Think with 3D: Geometric Imagination Grounded Spatial Reasoning from Limited Views},
  author={Chen, Zhangquan and Zhang, Manyuan and Yu, Xinlei and Luo, Xufang and Sun, Mingze and Pan, Zihao and Feng, Yan and Pei, Peng and Cai, Xunliang and Huang, Ruqi},
  journal={arXiv preprint arXiv:2510.18632},
  year={2025}
}

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Safetensors

Model size

4B params

Tensor type

BF16

F32

Model tree for jankin123/3DThinker-Mindcube

Base model

Qwen/Qwen2.5-VL-3B-Instruct

Finetuned

(752)

this model

Paper for jankin123/3DThinker-Mindcube

Think with 3D: Geometric Imagination Grounded Spatial Reasoning from Limited Views

Paper • 2510.18632 • Published Oct 21, 2025 • 23