# gpt-oss-20bMedium

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OpenAI

Canonical URL: https://benchize.com/models/gpt-oss-20b-medium
Last updated: Thu, 22 Oct 2026 08:20:15 GMT

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OpenAI

## Benchmarks

| Benchmark | Score | ± | Rank | Source |  |
| --- | --- | --- | --- | --- | --- |
| [OTIS Mock AIME 2024–2025](https://benchize.com/benchmarks/epoch-ai%3Aotis_mock_aime_2024_2025.md) | 65.28% | SE ±5.93 pp | 81 / 124 | [epoch ai · OTIS Mock AIME 2024-2025](https://epoch.ai/data/benchmark_data.zip#file=otis_mock_aime_2024_2025.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.6527777777777778 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.6527777777777778 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion OTIS Mock AIME 2024-2025 reasoningBudget Not reported Reasoning effort medium sourceModelVersion gpt-oss-20b_medium ### Reported statistics Uncertainty Standard error: ±5.93 pp standardError 0.0593111883162336 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=otis_mock_aime_2024_2025.csv) Source epoch ai Original model label gpt-oss-20b Source version OTIS Mock AIME 2024-2025 Evaluated 2026-08-27T14:12:40.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `b7c9da8c0587c82f1e0d814ceb496c24308380b997a16203b6e5d39eb07f4f50` Source locator `/rows/63` |  |  |  |  |  |
| [GPQA Diamond](https://benchize.com/benchmarks/gpqa-diamond.md) | 60.8% | SE ±2.49 pp | 96 / 126 | [epoch ai · GPQA diamond](https://epoch.ai/data/benchmark_data.zip#file=gpqa_diamond.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.6079545454545454 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.6079545454545454 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion GPQA diamond reasoningBudget Not reported Reasoning effort medium sourceModelVersion gpt-oss-20b_medium ### Reported statistics Uncertainty Standard error: ±2.49 pp standardError 0.024864059770258008 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=gpqa_diamond.csv) Source epoch ai Original model label gpt-oss-20b Source version GPQA diamond Evaluated 2026-08-27T14:06:50.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `9ef0b938bdd8406b029d595983ee8ad3a80bd9d64b82605b91b5ce39ba650c39` Source locator `/rows/55` |  |  |  |  |  |

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Cite as: gpt-oss-20bMedium — Benchize, https://benchize.com/models/gpt-oss-20b-medium (retrieved 2026-10-22)