DeepSeek V4 Flash 284B (13B active)

User reports DeepSeek V4 Flash 4bit at 29.9 tok/s generation and 426.5 tok/s prompt processing on a Mac Studio with M3 Ultra 512GB unified memory. Setup is MLX 0.32.0 (draft PR #1189) with a standard 8,000-byte prompt, 300 generated tokens, temperature 0, and no speculative decoding. The same machine also ran DeepSeek R1-0528 4bit MLX at 206.9 / 20.3, GLM-5.2 4bit MLX at 182.6 / 17.9, Kimi K2.7 Code Q2_K_XL GGUF on llama.cpp 571d0d5 at 144.8 / 24.6, Qwen3.5 397B-A17B 4bit MLX at 510.3 / 38.1, gpt-oss-120B MXFP4 MLX at 1,405.9 / 79.2, Qwen3.6 35B-A3B 4bit MLX at 2,892.2 / 94.6, Gemma 4 31B IT 4bit at 347.8 / 29.2, Gemma 4 26B-A4B IT 4bit at 2,508.5 / 104.9, Qwen3-Coder-Next 4bit at 2,099.8 / 77.2, and Devstral 2 123B 4bit at 90.4 / 8.9 (prompt / generation tok/s).