DeepSeek V4 Flash 284B (13B active)

User reports DeepSeek-V4-Flash-0731 at 4-bit served across two Mac Studio M3 Ultra (512GB) boxes: prefill 1012 tok/s on a 13.9K-token prompt (TTFT 13.7 s), decode 45-47 tok/s single-stream and 112-117 tok/s aggregate at batch 8. Setup is MLX with an oMLX 0.6.3rc2 serving overlay, MTP/speculative machinery enabled, over a single Thunderbolt 5 cable using the jaccl RDMA mesh backend. The decode figure is given only as a range, so no single generationTps is recorded. The repo is a reproducibility playbook; the oMLX 0.6.3rc2 build artifact is no longer available and must be obtained upstream.