Hy4 Preview is Tencent's open-source 770B-parameter mixture-of-experts model (49B active, 1M context) designed for long-horizon agentic tasks such as coding, game development, and complex document analysis.
Hy4 preview
Tencent’s 770B open model for long-horizon work
Hy4 preview Introduction
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PricingPaid
ListedAug 30, 2026
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