Tencent open-sources Hy4 Preview: 770B params, 1M context, on par with GLM-5.3
xeophon · x · 2026-08-28
Tencent has released Hy4 Preview, a 770B-parameter MoE model (49B active) with 1M context window, fully open-sourced under Apache 2.0.
Reported scores are strong, putting it roughly on par with GLM-5.3. The poster notes Tencent has noticeably accelerated its model training efforts since Shunyu Yao joined the company.
Related event: Tencent Open-Sources Hunyuan Hy4 Preview: 770B MoE with 1M Context(28 posts)→
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