DeepSeek V4 Flash 284B (13B active)

User reports DeepSeek V4 Flash 0731 at 36.1 t/s generation and 498.3 t/s prefill on a MacBook Pro M5 Max 128GB 40 GPU. Setup is oMLX 0.5.7 with a 2.44 bpw mixed MLX quantization (92.8 GB on disk) at 1k prompt, single request, 128 generated tokens, speculative decoding off. Generation holds 33.8 t/s at 4k and 31.5 t/s at 32k, with peak memory rising 1.03 GB across an 8x context jump; prefill at 32k takes 97 seconds to first token. Continuous batching reaches 83.2 t/s at batch 8 (2.30x).