gpt-oss-20b vs 120b

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Rows of servers and hardware in a data center

gpt-oss-20b vs 120b — which one should you actually run? (2026)

One fits on a gaming GPU; the other needs a data-center card. They're aimed at completely different people. Here's how to pick the right gpt-oss for your hardware and your goals.

Lena Fischer · 2h ago · 10 min