Tencent Announces Hunyuan Hy4: Vision for the First Time, No Date or Benchmarks Yet
At the October 29 Tencent Global Digital Ecosystem Summit, the company said Hy4 strengthens long-horizon and real-world productivity tasks, improves chain-of-thought efficiency, and adds vision understanding for the first time. It builds on the Hy4 preview open-sourced August 28: 770B total parameters, 49B active, over 1M context. Developers weighing a self-hosted Chinese stack get a direction signal, not a product: no release date, pricing, API plan or benchmark scores yet. Watch at launch for evaluation data, open weights, and real-task vision quality.
At a glance
- 1Announced October 29 at Tencent Global Digital Ecosystem Summit; Hy4 flash to follow soon
- 2Hy4 strengthens long-horizon and real productivity tasks, improves chain-of-thought efficiency, adds vision
- 3Hy4 preview shipped August 28 as open source: 770B total params, 49B active, over 1M context
What was announced
On October 29, at the 2026 Tencent Global Digital Ecosystem Summit, Tencent announced that Hy4 is coming soon. Per Science and Technology Daily, Hy4 strengthens long-horizon and real-world productivity tasks compared to Hy4 preview, improves chain-of-thought efficiency, and introduces vision understanding for the first time in the series.
The same announcement flagged Hy4 flash as arriving in the near future — inheriting Hy4's vision and agent capabilities, evolving rapidly through deep co-design of model and product.
What it builds on
Hy4 preview launched on August 28 this year and was open-sourced at the same time. Published specs: 770B total parameters, 49B active parameters, and context length exceeding 1M. Tencent described it at the time as significantly expanded in model size, context length, and data scale, sitting in the first tier among open models.
So Hy4 is not a new family starting from scratch. It is the production convergence of a base that is already open, with published parameter counts and million-token context.
Reading the three keywords
Members only · the rest is locked
Become a member to unlock full articles and the complete podcast feed
See plansRelated
Full-text Markdown
Copy or download in one click, then paste into notes or feed it to an AI