Tencent announced the full release of Hy4 on November 4, 2026, adding vision and computer-use capabilities and making the model available through hosted APIs and Tencent products. The model weights and a comprehensive system card are planned for a later release. The earlier Hy4 preview, by contrast, was open-sourced when it arrived in August 2026. It had 770 billion total parameters, 49 billion active parameters and a 1M-token context window, and Tencent identified excessive reasoning and…
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Tencent Releases Full Hy4 Model With Vision and Computer Use