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I’ve jumped over to oMLX. A ton of rough edges but I think it’s the future.


At least for the Gemma4-26B-A4B, Token-gen speed with OMLX is far worse on my M1 Max 64GB Macbook, compared to llama-server:

  Quick benchmark on M1 Max 64GB, Gemma 4 26B-A4B (MoE), comparing matched dynamic 4-bit quants. Workload
  was Claude Code, which sends ~35K tokens of input context per request (system prompt + tools + user
  message):

  llama.cpp (unsloth/gemma-4-26B-A4B-it-GGUF:UD-Q4_K_XL, llama-server -fa on -c 131072 --jinja --temp 1.0
  --top-p 0.95 --top-k 64):
  - pp ≈ 395 tok/s
  - tg ≈ 40 tok/s

  oMLX (unsloth/gemma-4-26b-a4b-it-UD-MLX-4bit, omlx serve --model-dir ~/models/omlx, with
  sampling.max_context_window and max_tokens bumped to 131072 in ~/.omlx/settings.json):
  - pp ≈ 350 tok/s
  - tg ≈ 5–13 tok/s

  Same model family and quant tier. Prompt processing is comparable, but oMLX's token generation is 3–7x
  slower than llama.cpp's Metal backend. Counter-intuitive given MLX is Apple's native ML framework.


Check out vMLX if you use Apple Silicon. https://github.com/jjang-ai/mlxstudio


Same. Opencode + oMLX (0.3.4) + unsloth-Qwen3-Coder-Next-mlx-8bit on my M5 Max w 128GB is the sweet spot for me locally. The prompt decode caching keeps things coherent and fast even when contexts get north of 100k tokens.


Have you been using `omlx serve`? If so, how are you bumping up the max context size? I'm not seeing a param to go above 32k?


you can set it in the .omlx/settings.json - ask a code-agent to figure it out by pointing it at the omlx repo




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