3 vs 0 benchmarks won
Google Gemini 3.0 Pro | OpenAI gpt-oss-20b | |
|---|---|---|
| Overview | ||
| Company | OpenAI | |
| Release date | Nov 18 2025 | Aug 5 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
Science reasoning GPQA Diamond | 91.9% | — |
Software engineering SWE-Bench Verified | 76.2% | — |
Multimodal understanding MMMU | 81% | — |
| Timeline | ||
| Release gap | gpt-oss-20b shipped 105 days before Gemini 3.0 Pro | |
Gemini 3.0 Pro leads gpt-oss-20b on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). gpt-oss-20b shipped 105 days before Gemini 3.0 Pro, so benchmark comparisons should account for the intervening progress.
gpt-oss-20b is an open-source / open-weight model; Gemini 3.0 Pro is proprietary.
Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.