Hy4 Preview
Tencent’s open-weight 770B MoE (49B active) for coding agents and tool use.
Hy4 Preview is a Tencent mixture of experts with 49B of 770B parameters active, built for coding agents, complex tool use and productivity work. Weights are Apache-2.0 on Hugging Face.
- Provider
- Tencent
- Type
- Language model
- Released
- Aug 28, 2026
- Input
- text
- Output
- text
- Open weights
- Yes
- License
- Apache-2.0
Best for
- Coding
- Agents
- Long context
Strengths
- Open weights (Apache-2.0)
- Coding agents
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