gpt-oss-20b and Grok‑2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑2 shipped 356 days before gpt-oss-20b, so benchmark comparisons should account for the intervening progress.

gpt-oss-20b is open weight, while Grok‑2 is proprietary.

Direct benchmark comparisons are unavailable — gpt-oss-20b and Grok‑2 don't publish scores on any of the same benchmarks.