Best GPU for running gpt-oss locally

Which GPU or Mac you need for OpenAI’s open-weight gpt-oss models, from the cheapest card that runs the small one to what it takes for gpt-oss-120b. All checks are at Q4_K_M, about 4k context.

Cheapest way in: Radeon RX 7900 XT runs gpt-oss-20b for $899. For gpt-oss-120b, the cheapest fit we track is Framework Desktop (Ryzen AI Max+ 395) 128GB at $3449.

Cheapest hardware per model

"Fits" means the model needs 90% or less of usable memory at Q4 (how we calculate). Prices are dated snapshots, mostly launch MSRP, so street prices can differ a lot; see each device page for its source.

Every priced machine, cheapest first

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