gpt-oss-20b

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Flat illustration of a person at a desk with a small plain mini desktop computer and an AI brain shape split into two pieces above it

gpt-oss-20b on a Mac mini (16GB): yes, but get 24GB

llama.cpp's own guide runs it on a 16GB Mac with one flag. But on a Mac the CPU and GPU share one pool of memory, so the whole model still has to fit, and 16GB leaves almost nothing for macOS. Here's the maths.

Tensor · 6d ago · 6 min

Flat illustration of a person splitting an AI brain puzzle piece between a small graphics card and a row of memory sticks

gpt-oss-20b on an 8GB or 12GB GPU: yes, with --n-cpu-moe

Everyone says 16GB minimum. That's only true if the whole model has to live on the GPU. llama.cpp's own guide runs it on an 8GB RTX 2060. Here are the commands, and the starting values for your card.

Tensor · 6d ago · 7 min

Flat illustration of a person running a local AI model on a PC with a glowing graphics card, on a teal background

Best GPU for Running gpt-oss Locally in 2026 (20B and 120B)

OpenAI shipped two very different models. The 20B fits a normal 16GB card and flies; the 120B is an 80GB-class model you'll mostly rent. Here's the card I'd buy for each — VRAM-first, with current requirements cited.

Tensor · Sep 22 · 8 min

A glowing network shaped like a brain on a purple surface

is gpt-oss actually good for local AI? OpenAI's open models, honestly reviewed

OpenAI finally shipped open-weight models — gpt-oss-20b and gpt-oss-120b. The 20B runs on a 16GB card, the 120B rivals DeepSeek at a fraction of the cost. Here's whether they're worth running.

Tensor · Aug 4 · 10 min

how to run gpt-oss locally — OpenAI's own open model, on your own machine

OpenAI released open-weight models you can run yourself. The 20B fits a 16GB card thanks to clever quantization; the 120B needs a serious rig. Here's how to run gpt-oss locally.

Tensor · Aug 3 · 10 min