Can I run GPT-OSS (OpenAI) offline?

Yes. GPT-OSS (OpenAI) is a downloadable model: with Your Own AI it runs entirely on your computer, works with no internet connection, and your conversations never leave your device.

What hardware does GPT-OSS (OpenAI) need?

The smallest variant (20B (3.6B active), a 11.6 GB download) runs on a machine with 16 GB of memory. Larger variants want more memory or a graphics card - the interactive checker on this page grades every variant against your hardware, using the same logic as the app.

Is GPT-OSS (OpenAI) free to use?

The model weights are released under the Apache 2.0 license and download at no charge. Your Own AI itself is free and open source for local use.

GPT-OSS (OpenAI)

Runs on your device

OpenAI · Aug 2025

OpenAI's open-weight model. Strong reasoning, agentic tasks, and function calling.

Context: 128K tokens
Smallest download: 11.6 GB
Runs from: 16 GB RAM
License: Apache 2.0

reasoningagenticcodinganalysis

Will GPT-OSS (OpenAI) run on your machine?

This is the same sizing the app uses - not a marketing estimate.

System memory32 GBGraphics card memory8 GB

20B (3.6B active)11.6 GB downloadRuns - experts in RAM, the rest on the GPU

Mixture-of-experts: the always-on layers sit on your card, the experts sit in system memory - bigger than your card, still quick.

120B (5.1B active)65.4 GB downloadToo big for this machine

On Apple Silicon, system memory is also graphics memory - pick "None / integrated / Apple Silicon" and read the bars against your Mac's memory. The app checks your real hardware before every download.

Variants & sizes

Variant	Download	Quantization	Needs	Apple Silicon
20B (3.6B active)MoE	11.6 GB	Q4_K_M	16 GB RAM	Metal (GGUF)
120B (5.1B active)MoE	65.4 GB	MXFP4	80 GB RAM	Metal (GGUF)

The app picks the right variant for your machine and verifies every download. Model files come straight from their official repositories, pinned to exact revisions.

Context window, compared

Nemotron 3.5 Lightning256K

Ornith 1.5256K

GPT-OSS (OpenAI)128K

License

GPT-OSS (OpenAI) is released under the Apache 2.0 - read the terms. The weights download to your machine and stay there; Your Own AI adds no accounts, tracking, or lock-in on top.

Frequently asked questions

Can I run GPT-OSS (OpenAI) offline?: Yes. GPT-OSS (OpenAI) is a downloadable model: with Your Own AI it runs entirely on your computer, works with no internet connection, and your conversations never leave your device.
What hardware does GPT-OSS (OpenAI) need?: The smallest variant (20B (3.6B active), a 11.6 GB download) runs on a machine with 16 GB of memory. Larger variants want more memory or a graphics card - the interactive checker on this page grades every variant against your hardware, using the same logic as the app.
Is GPT-OSS (OpenAI) free to use?: The model weights are released under the Apache 2.0 license and download at no charge. Your Own AI itself is free and open source for local use.
How much context does GPT-OSS (OpenAI) support?: 128K tokens of context.

Run GPT-OSS (OpenAI) in two clicks

Download Your Own AI, pick GPT-OSS (OpenAI), and the app sizes it to your hardware. Private by architecture - no account needed for local use.

Download the app