Tencent Hunyuan launches open-source Hy4 preview: 770B params, 49B active, 1M context
ShunyuYao12 · x · 2026-09-03
Tencent Hunyuan officially released the Hy4 preview: 770B total parameters, 49B active, 1M token context, positioned as an open-source frontier model built for productivity with consistent affordable pricing. Weights are on HuggingFace and GitHub. Developer @thegenioo highlighted that on a front-end test prompt, Hy4 produced the most novel, non-generic UI results he's seen, clearly beating other frontier models on the same prompt.
Related event: Tencent Open-Sources Hunyuan Hy4 Preview(2 posts)→
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