Tencent open-sources Hy4 preview with 770B params and 1M context
testingcatalog · x · 2026-08-30
Tencent has released the Hy4 preview, a 770-billion-parameter flagship model with 49 billion active parameters and a 1-million-token context window. It targets long-horizon software engineering, document-heavy tasks, game development, and research. Tests show it outperforms independent Codex sessions in parallel management and benchmark coordination. The model has also been quantized to 200GiB GGUF while maintaining performance.
Related event: Tencent Open-Sources Hunyuan Hy4 Preview: 770B MoE with 1M Context(12 posts)→
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