OpenAI's newest gpt-oss-20b model lets your Mac run ChatGPT-style AI with no subscription, no internet, and no strings attached. Here's how to get started.

This week, OpenAI released its long-awaited open weight model called gpt-oss. Part of the appeal of gpt-oss is that you can run it locally on your own hardware, including Macs with Apple silicon.

Gpt-oss-120b can reportedly run on an 80 GB GPU, and OpenAI reports it offers similar performance to its o4-mini model.

But tiny AI matters, too. Google has announced a tiny version of its Gemma open model designed to run on local devices.

The new gpt-oss-20b model from OpenAI can run on-device with Snapdragon chips, but your phone isn't powerful enough.

But in the first 24 hours after its release, the new model was met with mixed reviews.

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