别信10倍差价，实际2-5倍。美国硬件强但电费贵，看Blackwell vs 华为Ascend谁更划算。
Emad Mostaque声称美国供应商能以中国十分之一价格运行Kimi K3，但分析显示实际约2-5倍便宜。美国电力成本更高（9美分/千瓦时 vs 中国工业6美分/千瓦时），电力占推理成本约25%。Blackwell系统每瓦可用算力是华为Ascend集群两倍，Nvidia成熟工具链在开放权重后数周内可降低2-5倍成本。中国在数据中心建设和劳动力成本有优势，但硅效率主导前沿推理。
Emad Mostaque's claim that US providers could serv…
Emad Mostaque's claim that US providers could serve Kimi K3 at one tenth the price of Chinese competitors is overstated. The real number looks closer to 2 to 5 times cheaper, not 10x.
Electricity costs work against the US. Chinese industrial rates sit around 6 cents per kWh with some subsidies in key zones, while US data centres average closer to 9 cents. That 50 percent premium matters when power makes up roughly a quarter of inference costs.
The US advantage lives in hardware efficiency. Blackwell systems deliver roughly double the usable compute per watt versus current Huawei Ascend clusters. Mature tooling on Nvidia hardware has shown 2 to 5x cost drops on similar large MoE models in weeks once weights are open.
China holds advantages in data centre build costs and labour, but silicon efficiency tends to outweigh them for frontier inference. The realistic net for well tuned US hosting sits at 2 to 5x cheaper.
The gap will shift as new Ascend chips arrive and providers tune K3, but hardware access remains the structural factor is still key.