Hy4 and Hy4 Flash
Tencent said at its Global Digital Ecosystem Conference that Hy4 and Hy4 Flash will be released soon and will support visual understanding.
The full Hy4 is meant to do better than the August Hy4 preview on tasks that need sustained reasoning and execution, including real-world productivity workflows. Tencent also aims to improve reasoning efficiency. Hy4 Flash focuses on cost efficiency while keeping visual understanding and agent capabilities.
- Date
- Thursday 29 October 2026
- Lab
- Tencent
- Kind
- model
- Access
- research preview
Figures
| Measure | Value | Measured by |
|---|---|---|
| Hy4 preview total parameters | 770 billion 49 billion activated during inference | company |
| Hy4 preview context window | 1 million tokens | company |
Announced as upcoming with no release date. The access value is a placeholder because the page does not state how the models will be offered.
Sources
This record was checked and corrected against its sources on 29 October 2026. How we check