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Tencent releases Hy4 Preview, a 770B-parameter AI model with 1M context window

This story is from 2026-08-28. It is preserved in the archive; the latest stories are on the live feed.

Tencent released Hy4 Preview, a 770B-parameter foundational model with a 1M context window, claiming it outperforms Z.AI and Moonshot models in internal tests.

Read the full story at Techmeme ↗

Timeline · 2 reports

  1. 2026-08-28 09:40 · Techmeme
    Tencent releases Hy4 Preview, a 770B-parameter open model with 1M context window, and says it outperforms Z.AI and Moonshot models in internal tests (Bloomberg)
  2. 2026-08-28 07:50 · r/singularity
    Introducing to tencent’s Hy4 preview Open weights: 770B MoE, 49B active, 1M context

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