Composer vs o3-pro
Cursor Composer | OpenAI o3-pro | |
|---|---|---|
| Overview | ||
| Company | Cursor | OpenAI |
| Release date | Oct 29 2025 | Jun 10 2025 |
| Access | Proprietary | Proprietary |
| Timeline | ||
| Release gap | o3-pro shipped 141 days before Composer | |
Which is better: Composer or o3-pro?
Composer and o3-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o3-pro shipped 141 days before Composer, 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 — Composer and o3-pro don't publish scores on any of the same benchmarks.
Frequently asked questions
Composer was released by Cursor on Oct 29 2025.
o3-pro was released by OpenAI on Jun 10 2025.