Composer 2.5vsGPT-5.5-Cyber
Composer 2.5 | GPT-5.5-Cyber | |
|---|---|---|
| Benchmarks | ||
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | 54% | — |
Multilingual coding SWE-Bench MultilingualLike SWE-Bench, but the coding problems span many programming languages, not just one. Tests how broadly the AI can code. Higher is better. | 79.8% | — |
Agentic coding CursorBench v3.2Cursor's own test of harder, real-world coding tasks inside a code editor, on the refreshed v3.2 task set. Scores aren't comparable with v3.1. Higher is better. | 56.1% | — |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | 63.2% | — |
Agentic coding DeepSWE 1.0Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. Higher is better. | 18% | — |
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. | 92% | — |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | 73% | — |
Agentic terminal coding Terminal-Bench 2.0Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? (Version 2.0 of the test.) Higher is better. | 69.3% | — |
Cybersecurity CyberGymTests the AI on cybersecurity challenges — finding and exploiting software weaknesses inside a safe sandbox. Higher is better. | — | 85.6% |
| Overview | ||
| Company | Cursor | OpenAI |
| Release date | May 18 2026 | Jun 22 2026 |
| Access | Proprietary | Proprietary |
Which is better: Composer 2.5 or GPT-5.5-Cyber?
Composer 2.5 and GPT-5.5-Cyber don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Composer 2.5 shipped 35 days before GPT-5.5-Cyber, 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 2.5 and GPT-5.5-Cyber don't publish scores on any of the same benchmarks.
Frequently asked questions
Composer 2.5 was released by Cursor on May 18 2026.
GPT-5.5-Cyber was released by OpenAI on Jun 22 2026.
Other comparisons
Composer 2.5vsClaude Opus 5GPT-5.5-CybervsClaude Opus 5Composer 2.5vsGemini 3.6 FlashGPT-5.5-CybervsGemini 3.6 FlashComposer 2.5vsMuse GlimmerGPT-5.5-CybervsMuse GlimmerComposer 2.5vsGrok 4.5GPT-5.5-CybervsGrok 4.5Composer 2.5vsDeepSeek-V4-Flash-0731GPT-5.5-CybervsDeepSeek-V4-Flash-0731Composer 2.5vsMistral Medium 3.5GPT-5.5-CybervsMistral Medium 3.5