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Composer vs GPT-5 mini

Cursor Composer vs OpenAI GPT-5 mini — side-by-side specs.

Cursor
Composer
OpenAI
GPT-5 mini
Overview
CompanyCursorOpenAI
Release dateOct 29 2025Aug 7 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapGPT-5 mini shipped 83 days before Composer

Which is better: Composer or GPT-5 mini?

Composer and GPT-5 mini do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. GPT-5 mini shipped 83 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 — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Composer released?
Composer was released by Cursor on Oct 29 2025.
When was GPT-5 mini released?
GPT-5 mini was released by OpenAI on Aug 7 2025.

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