Tencent Releases Hunyuan Hy4: 770B Params, CodingAgent Enters First Tier

APPSO · wechat · 2026-08-28

Tencent released Hunyuan Hy4 Preview with 770B total parameters (49B active), doubling Hy3. Tests show significant improvements in long-chain CodingAgent tasks, including building a playable 3D moon rover game with physics, fixing bugs in an expense system, and generating recruitment posters. Executives addressed “slow AI progress,” citing compute shortages but promising breakthroughs with Hy4. Tencent also merged its LLM and multimodal teams under Yao Shunyu, solidifying a Co-design strategy binding models, scenarios, and products.

Related event: Tencent Open-Sources Hunyuan Hy4 Preview: 770B MoE with 1M Context(10 posts)→

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