Hy4 preview
Tencent’s 770B open model for long-horizon work
What is Hy4 preview?
Hy4 Preview is a 770B MoE model (49B active, 1M context) from Tencent, built for long-horizon agentic tasks. It autonomously handles coding, game dev, and complex document analysis, running its own tests and fixing bugs before delivery.
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