---
title: "Tencent releases Hy4 Preview, a 770B-parameter open model with a 1M context window, and says it narrowly beat GLM-5.3 and Kimi K3 in internal engineering tests"
type: signal
url: https://frontiernewswire.com/s/tencent-releases-hy4-preview-a-770b-parameter-open-model-with-a-1m-dabe7fbd
published: 2026-08-29T07:00:09.765Z
byline: "Source: TECHMEME"
---

# Tencent releases Hy4 Preview, a 770B-parameter open model with a 1M context window, and says it narrowly beat GLM-5.3 and Kimi K3 in internal engineering tests

Source: TECHMEME · Published 2026-08-29 · Canonical: https://frontiernewswire.com/s/tencent-releases-hy4-preview-a-770b-parameter-open-model-with-a-1m-dabe7fbd

In this story: [Tencent](https://frontiernewswire.com/companies/tencent), [Kimi K3](https://frontiernewswire.com/models/kimi-k3), [GLM-5.3](https://frontiernewswire.com/models/glm-5-3)

## Sources

- [Read the original at TECHMEME](https://www.bloomberg.com/news/articles/2026-08-28/tencent-touts-new-ai-model-it-claims-outperforms-z-ai-moonshot)

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