OpenAI GPT-5 mini vs OpenAI o1 — side-by-side specs.
OpenAI GPT-5 mini | OpenAI o1 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | Aug 7 2025 | Dec 5 2024 |
| Model type | — | — |
| Open source | No | No |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
| Timeline | ||
| Release gap | o1 shipped 245 days before GPT-5 mini | |
GPT-5 mini and o1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1 shipped 245 days before GPT-5 mini, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — GPT-5 mini and o1 don't publish scores on any of the same benchmarks.