Image understanding via Tencent Cloud's API ranked well on LMArena, but pricing and UK availability are unknown and open weights haven't appeared.
Kenning's take
What it does
Hunyuan-Vision-1.5 is Tencent's vision-language model that reads and reasons about images and video, built on a hybrid Mamba-transformer design. The thinking version ranked third on LMArena in October 2025, which Tencent says made it the best-performing model from China. It is available through Tencent Cloud's API and LMArena's direct chat, and Tencent has said it will publish open weights.
- Image and video understanding
- Step-by-step visual reasoning
- Hybrid Mamba-transformer design
- Multilingual
- OpenAI-compatible Tencent Cloud API
Who it suits. Developers who need image understanding through an API.
Key facts
- Category
- AI models
- Made by
- Tencent
- Based in
- China
- Launched
- 2025
- How to get it
- Tencent Cloud Hunyuan API; LMArena direct chat; weights promised but not yet listed
- Works on
- API
FAQ
Is Hunyuan-Vision-1.5 open source?
Tencent said it will release weights; its GitHub plan still lists them as to come.
How can I use Hunyuan-Vision-1.5-Thinking?
Through Tencent Cloud's Hunyuan API or LMArena's direct chat.
Facts from the maker's own pages and the sources listed. Checked 2026-10-11.
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