How to use from
Pi
Start the MLX server
# Install MLX LM:
uv tool install mlx-lm
# Start a local OpenAI-compatible server:
mlx_lm.server --model "meshllm/lfm2-350m-parity-4bit-mlx"
Configure the model in Pi
# Install Pi:
npm install -g @mariozechner/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "mlx-lm": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "meshllm/lfm2-350m-parity-4bit-mlx"
        }
      ]
    }
  }
}
Run Pi
# Start Pi in your project directory:
pi
Quick Links

LFM2 350M Parity 4bit MLX

Same-origin MLX artifact for mesh-llm backend comparison.

  • Source checkpoint: LiquidAI/LFM2-350M
  • Conversion path: original checkpoint -> MLX 4bit
  • Intended pair: meshllm/lfm2-350m-parity-q4_k_m-gguf

Validation

Validated locally with the mesh-llm exact smoke suite on 2026-04-06.

This pair is useful as a backend-drift detector rather than a clean parity canary. In the same-origin exact run, the MLX side materially outperformed the GGUF side on several simple prompts.

Files

  • MLX model directory contents
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