Tencent's Open-Source Hy4 Preview: 770B/49B Params, 1M Context, Tops Blind Eval at 2.99/4
FellMentKE · x · 2026-09-02
Tencent Hunyuan released open-source Hy4 preview: 770B total / 49B active parameters, 1M+ token context window, targeting coding, planning, tool use, document analysis, workflow automation, and long-horizon tasks. In a blind internal eval across 203 engineering tasks it scored 2.99/4, ahead of GLM 5.3 (2.92) and Kimi K3 (2.94). Pricing: $6/M input, $18/M output, $0.30/M cached tokens — flagship-level capability at open-source pricing. Available via WorkBuddy.
Related event: Tencent Open-Sources Hunyuan Hy4 Preview(2 posts)→
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