Qwen3.8 27B

User benchmarks Qwen3.8-27B on an Apple M2 Max 96GB, with MTPLX reaching 20-22 t/s decode and 109 t/s prefill. Setup is 8-bit quants in GGUF and MLX with an unquantised KV cache at 262k context, across llama.cpp baseline, llama.cpp+MTP, MTPLX, oMLX, mlx-dspark (DFlash2/DSpark) and vllm-mlx, on an agentic coding benchmark with 4 phases. MTPLX xhigh is worth the extra time, while oMLX xhigh is not. vllm-mlx leaks chain-of-thought into the output, and mlx-dspark DFlash2 xhigh thought 226K tokens and delivered nothing.