Tencent open sourced a 770B model and on its own blind test it loses about four times in ten

Tencent published Hy4 preview on 28 August under Apache 2.0, weights included, commercial use permitted. It is a mixture of experts, 770B total parameters, about 49B active per token, with context stated above 1M. The number that stuck with me came from Tencent's own evaluation. 163 internal experts blind rated 203 engineering tasks. Against Kimi K3, its nearest rival, Hy4 won 51.2%, tied 7.9% and lost 40.9%. Four losses in ten, on a test the vendor ran itself, and Tencent's own word for the gap

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