📑🤗 Paper & Weights are coming    |    💻 API   |    💭 Direct Chat @ LMArena  

We are excited to introduce Hunyuan-Vision-1.5, a mamba-transformer hybrid architecture vision-language model that offers advanced multilingual multimodal understanding and reasoning capabilities.

• October 6, 2025: hunyuan-vision-1.5-thinking ranked 3rd on LmArena, the best performing model in China.

• Hunyuan-Vision-1.5 (vision language model)
  • Hunyuan-Vision-1.5 Technical Report
  • Hunyuan-Vision-1.5 Checkpoints (A56B, 4B)
  • Hunyuan-ViT-V1 Checkpoints
  • TRT Inference Support
  • "Thinking on Images" Support
  • VLLM Support

⚙️ Hybrid Architecture: With a novel mamba-transformer hybrid architecture, Hunyuan-Vision-1.5 achieves state-of-the-art performance on multimodal understanding tasks while delivering highly efficient inference.

🧩 Advanced "Thinking-on-Image" Reasoning: Beyond strong and robust multimodal reasoning, Hunyuan-Vision-1.5 offers more advanced thinking-with-image capabilities that support deeper multimodal understanding and reasoning with a novel visual reflection paradigm.

🌐 Versatility: Hunyuan-Vision-1.5 excels across various tasks from image and video understanding to more advanced tasks such as visual reasoning and 3D spatial comprehension. It also offers a seamless, multilingual user experience across real-world applications, ensuring smooth performance across languages and diverse task contexts.

We will open-source Hunyuan-Vision-1.5. The model and technical report will be released in late October. Stay tuned for more updates!

Hunyuan-Vision-1.5 is now available at Tencent Cloud. You are welcome to try our most advanced model right now. ("Thinking on Images" mode will be available later)

from openai import OpenAI

# set your Tencent Cloud API key here

API_KEY = ""



client = OpenAI(

    api_key=API_KEY,

    base_url="https://api.hunyuan.cloud.tencent.com/v1",

)



MODEL_NAME = 'hunyuan-t1-vision-20250916'



completion = client.chat.completions.create(

    model=MODEL_NAME,

    messages=[

        {"role": "user", "content": [{"type": "image_url","image_url": {"url": "https://dscache.tencent-cloud.cn/upload/uploader/hunyuan-64b418fd052c033b228e04bc77bbc4b54fd7f5bc.png"}},{"type": "text", "text": "What is it?"},]}]

)



print(completion.choices[0])

Our model is also available on LMArena Direct Chat. You can try it out by selecting hunyuan-vision-1.5-thinking from the model list in Direct Chat.

Hunyuan-Vision-1.5 is a vision-language model designed for general-purpose multimodal understanding and reasoning. It excels across various tasks from image and video recognition, OCR, diagram understanding to more advanced tasks such as visual reasoning and 3D spatial comprehension.

We aim to offer a seamless, multilingual user experience across real-world applications, ensuring smooth performance across languages and diverse task contexts. You can try our model using your preferred language.

Hunyuan-Vision-1.5 offers more advanced thinking-with-image capabilities that support deeper multimodal understanding and reasoning with a "thinking on images" paradigm. Our model is optimized to use various extra tools to help the thinking process by modifying input images (crop/zoom-in, drawing points/lines/boxes, etc.) or acquiring additional knowledge via web search.