Tencent open-sources Hy4 preview, a 770B-parameter LLM
Tencent Hy4 preview has 770B total parameters, 49B active, and a context window exceeding 1M tokens. It scored 2.99/4.00 in Tencent's internal blind evaluation, ahead of GLM-5.3 (2.92) and Kimi K3 (2.94).
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