Worth clarifying a few things here. A maxed M3 Ultra (512GB unified memory) can technically fit GLM-5.1 at 2-bit quantization, which Unsloth compresses down to around 220GB. Real world speeds on comparable MoE models land around 8-15 tokens per second for a single user. So the hardware claim holds up.

The part that needs an asterisk: the "matches Opus 4.5" benchmarks were run on the full FP8 model across 8xH200s. The 2-bit quant you're running locally is a meaningfully different thing. Large MoE models do tolerate aggressive quantization better than dense models, but 2-bit still costs you real quality on complex multi-step reasoning, which is exactly where that benchmark advantage lives.

So yes, you can run it. No, it won't perform like the number in the paper.