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 "Outlier-Ai/Outlier-Vision-35B-A3B-MLX-4bit"
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": "Outlier-Ai/Outlier-Vision-35B-A3B-MLX-4bit"
        }
      ]
    }
  }
}
Run Pi
# Start Pi in your project directory:
pi
Quick Links

Part of the Outlier shipping lineup. Outlier is a free macOS app that runs this model locally, with one click. Apple Silicon only.

Outlier Vision 35B-A3B (MLX 4-bit)

Multimodal MoE tier with image+text input (35B params, ~3.6B active per token). Optimized for image+text analysis, not code generation — use Core or Code for coding workflows.

Try it in Outlier

The simplest way to use this model is through the Outlier app — open the tier picker, select Outlier Vision, click download, and chat. No setup, no Python, no MLX install, no token quotas.

Download Outlier — outlier.host

A screenshot of the tier picker is at outlier.host/screenshots/tier-picker.png.

Load this directly (power users)

If you want the raw MLX-4bit weights without the app:

pip install mlx-lm
python -m mlx_lm.generate \
  --model Outlier-Ai/Outlier-Vision-35B-A3B-MLX-4bit \
  --prompt "Write a quicksort in Python." \
  --max-tokens 512
from mlx_lm import load, generate
model, tokenizer = load("Outlier-Ai/Outlier-Vision-35B-A3B-MLX-4bit")
print(generate(model, tokenizer, prompt="Hello", max_tokens=256))

Verified benchmarks

For σ-qualified MMLU, HumanEval, and Mac inference-speed numbers — with full provenance (source file, command, n, stderr, date) — see outlier.host/benchmarks.

Other Outlier shipping tiers

License

Apache 2.0 (inherits from upstream base model). Conversion artifact only — the underlying weights are governed by the base model's license.

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