Tencent Open-Sources Hy4 Preview: 770B-Parameter Model Outperforms DeepSeek V4 Pro on Coding Benchmarks, but Over-Verification Slows Real-World Delivery
Tencent Hunyuan has open-sourced Hy4 Preview, a 770B-parameter MoE model that scores 85.4 on Terminal Bench 2.1—surpassing DeepSeek V4 Pro and tying with Claude Opus 5—while its DeepSWE score jumps from 28.0 to 64.3. However, the model's over-verification tendency prolongs response times, and visual input support remains absent in this preview version.