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Composer 2 vs o1-pro

Cursor Composer 2 vs OpenAI o1-pro — side-by-side specs.

Cursor
Composer 2
OpenAI
o1-pro
Overview
CompanyCursorOpenAI
Release dateMar 20 2026Mar 19 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Multilingual coding
SWE-Bench Multilingual
73.7%
Agentic coding
CursorBench v3.1
52.2%
Agentic terminal coding
Terminal-Bench 2.0
61.7%
Timeline
Release gapo1-pro shipped 366 days before Composer 2

Which is better: Composer 2 or o1-pro?

Composer 2 and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-pro shipped 366 days before Composer 2, 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 2 and o1-pro don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Composer 2 released?
Composer 2 was released by Cursor on Mar 20 2026.
When was o1-pro released?
o1-pro was released by OpenAI on Mar 19 2025.

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