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 "Sawfwair/Inkling-Small-MLX-Mixed-2bit"
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": "Sawfwair/Inkling-Small-MLX-Mixed-2bit"
        }
      ]
    }
  }
}
Run Pi
# Start Pi in your project directory:
pi
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Inkling-Small MLX mixed 2-bit

Mixed-precision MLX conversion of thinkingmachines/Inkling-Small at revision b2d4f225a02032c5d154bff748ab5a00c5ca26e4. The conversion uses MLX 0.32.0 and mlx-vlm 0.6.7. See conversion.json for the machine-readable provenance and artifact inventory.

Only the 256 routed experts in each sparse MoE layer use affine 2-bit, group-128 weights. Attention, embeddings, routers, shared experts, dense MLPs, normalization, vision, and audio weights remain at the released BF16 precision. This conservative split targets 128 GB unified-memory Macs while protecting the non-routed paths that blanket 2-bit quantization damaged.

Validation status

The conversion gate checks the affine 2-bit/group-128 routed-expert metadata, all 120 quantized expert projections, every shard, and representative BF16 and packed tensor shapes.

On 2026-07-31, a full CUDA load and greedy generation smoke with MLX 0.32.0 and mlx-vlm 0.6.7 used 84,530,593,368 bytes of active MLX memory and peaked at 84,766,898,240 bytes on an NVIDIA H200. The model correctly answered 2 + 2 with 4, the "all but 9" sheep question with 9, and produced a correct Swift isEven function. This proves CUDA loading and token quality for the generated artifact; Apple Silicon runtime validation is tracked separately by mere.run.

mlx-vlm 0.6.7 also required the compatibility shims in the conversion script for its Inkling config exports and CUDA mask fallback; the managed mere.run lane uses its own native Swift/MLX loader.

mere.run text chat --model text-chat-inkling-small --prompt "Who are you?"
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