Outlier Quick on Mac mini M4 Pro: fits comfortably. Minimum unified memory required: 16 GB. Disk size: 15.61 GB. Default context window: 32K tokens. On Mac mini M4 Pro the Outlier Quick bandwidth-scaled estimate is ~14.9 tok/s [estimated from family-bandwidth ratio]; derivation: 43.6 tok/s on M1 Ultra × (273 / 800) bus ratio for the Apple M4 Pro. Treat as a first-order projection — the Outlier Quick number on this 2024 machine has not been formally measured.
The pairing under examination is Outlier Quick (15.61 GB MLX 4-bit, Gemma-4-26B-a4b-it base, 32K default context, 16 GB unified memory minimum) on a Mac mini M4 Pro (Apple M4 Pro, 12-14 CPU cores, 16-20 GPU cores, 24|48|64 GB unified memory, 273 GB/s, 2024). Outlier loads this tier as one mlx_lm process inside the bundled FastAPI sidecar. Apple Silicon decode on dense 4-bit weights is bandwidth-bound, so the ceiling on this exact Mac mini M4 Pro scales as the ratio 273 / 800 = 0.34× the published M1 Ultra number.
The Mac mini M4 Pro is a desktop with active cooling, which is the configuration that comes closest to holding the figure above through a sustained back-and-forth session. There is no battery to trade against and no lap to keep cool, so the limit on Outlier Quick here is the 273 GB/s memory bus rather than the thermal envelope. This is the shape of machine to pick if the job runs unattended.
Outlier’s Outlier Quick has a measured peak generation footprint of about 16 GB. The rule of thumb is to leave roughly 4 GB for the OS and one open browser tab, so across the Mac mini M4 Pro memory options that leaves 24 GB → 4.0 GB free; 48 GB → 28.0 GB free; 64 GB → 44.0 GB free. On Mac mini M4 Pro the Outlier Quick bandwidth-scaled estimate is ~14.9 tok/s [estimated from family-bandwidth ratio]; derivation: 43.6 tok/s on M1 Ultra × (273 / 800) bus ratio for the Apple M4 Pro. Treat as a first-order projection — the Outlier Quick number on this 2024 machine has not been formally measured.
The 2024 Mac mini M4 Pro ships with 24|48|64 GB of unified memory, so headroom for the 16 GB Outlier Quick requirement is 8 GB on the base SKU. Step-by-step install instructions live on the install guide; the part that varies for this Apple M4 Pro machine is that the 15.61 GB pull from Outlier-Ai/Outlier-Quick-26B-MLX-4bit over HTTPS lands in ~/Library/Application Support/Outlier/models/quick/ and download time is bandwidth-limited by the network, not by the 12-14-core Apple M4 Pro CPU.
The Outlier Quick tier defaults to 32K context and caps at 256K. KV cache scales linearly with context length on dense models, so longer contexts trade headroom for capacity. On a 24|48|64 GB Mac mini M4 Pro, the default context is the safe starting point.
15.61 GB on disk against 24|48|64 GB unified memory means the weights alone consume about 65% of the base SKU’s RAM on the Mac mini M4 Pro.
For lighter-weight work on this Apple M4 Pro, the Lite tier is the next step down and runs visibly faster. For heavier work, the Core tier is the next step up; check that the 24|48|64 GB SKU you have can fit its weights before installing. The unified-memory explainer works the bandwidth math out, and the bandwidth ratio for Mac mini M4 Pro is 0.34× M1 Ultra reference.
Download Outlier for MacRequires Apple Silicon (M1, M2, M3, or M4) — Intel Macs are not supported. macOS 12+.
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