GLM-5.3 320B (18B active) Flash

User benchmarks oMLX 0.7.0 against 0.7.0rc1 on an M5 Ultra 256GB, running GLM-5.3-Flash oQ4 at 4K–200K context. Prefill improves from 792 to 2,270 tok/s (median) and decode from 55.4 to 76.7 tok/s. A 1M-token prompt completes with prefill 1,485 tok/s, decode 41.5 tok/s, and time to first token 11.8 min. Setup uses Lightning MTP, TurboQuant KV 4-bit, and one model loaded at a time.