Composer 1.5 vs o1-preview
Cursor Composer 1.5 | OpenAI o1-preview | |
|---|---|---|
| Overview | ||
| Company | Cursor | OpenAI |
| Release date | Feb 8 2026 | Sep 12 2024 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 67% | — |
| Timeline | ||
| Release gap | o1-preview shipped 514 days before Composer 1.5 | |
Which is better: Composer 1.5 or o1-preview?
Composer 1.5 and o1-preview don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-preview shipped 514 days before Composer 1.5, 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 1.5 and o1-preview don't publish scores on any of the same benchmarks.
Frequently asked questions
Composer 1.5 was released by Cursor on Feb 8 2026.
o1-preview was released by OpenAI on Sep 12 2024.
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