gpt-oss-120b

OpenAI

Free

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MLX Score3.4

PriceFreeno paid plan

RunsOn your Mac

DeveloperOpenAI

LicenceOpenApache-2.0

CategoryModels

Mac14.0+macOS or later

gpt-oss-120b is OpenAI's larger open-weight model, for general-purpose, high-reasoning work. It has 117 billion parameters with 5.1 billion active per token, and adjustable reasoning effort.

It ships in a native 4-bit format (MXFP4); the MLX build is about 63 GB. On mlx.app's estimate it needs a Mac with 96 GB of memory.

Open weights under Apache 2.0. Run locally, nothing leaves your Mac.

How to Get It

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Official downloads only. MLX never re-hosts an app, and never runs a command for you.

MLX Score

3.4out of 5

Hugging Face downloads and likesahead of 60%

Hugging Face: 2,475,702 downloads (30 days), 5,480 likes · read 2026-11-02

Ranked against the open models listings, from real public data only. How the score works.

Information

Developer: OpenAI
Category: Open models
Price: Free (Open weights, free to download.)
Your data: Runs on your Mac
Licence: Apache-2.0
Mac: macOS 14.0 or later
iPhone and iPad: —
Needs: 96 GB memory
Links: Website · Hugging Face
Facts checked: 2026-11-01

Sources

huggingface.co/openai/gpt-oss-120b · Apache-2.0, 117B parameters with 5.1B active, configurable reasoning effort · checked 2026-11-01huggingface.co/mlx-community/gpt-oss-120b-MXFP4-Q8 · MLX build MXFP4-Q8 (about 63 GB) · checked 2026-11-01ml-explore.github.io/mlx/build/html/install.html · macOS 14.0 minimum (MLX needs Apple silicon and macOS 14.0+) · checked 2026-11-01mlx.app/run/gpt-oss-120b · memory: smallest Mac (96 GB) where the 4-bit MLX build fits with room for context, from lib/compare (75% of unified memory usable) · checked 2026-11-01Icon from Hugging Face

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