Tencent releases Hy4preview: 770B open-source model with 1M context
腾讯混元 · wechat · 2026-08-28
Tencent released its new flagship model Hy4preview, featuring 770B total parameters (49B active) and 1M context window. It excels in productivity tasks like coding, office analysis, game dev, and scientific research (molecular dynamics, quantum transport, geometry). Internal blind tests show it outperforming GLM-5.3 and KimiK3. The model is now open-source and available on Tencent Cloud.
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