Cursor Composer 2.5 vs DeepSeek DeepSeek Chat (R1-based) — side-by-side specs.
Cursor Composer 2.5 | DeepSeek DeepSeek Chat (R1-based) | |
|---|---|---|
| Overview | ||
| Company | Cursor | DeepSeek |
| Release date | May 18 2026 | Jan 20 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
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 v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | 63.2% | — |
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% | — |
| Timeline | ||
| Release gap | DeepSeek Chat (R1-based) shipped 483 days before Composer 2.5 | |
Composer 2.5 and DeepSeek Chat (R1-based) don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek Chat (R1-based) shipped 483 days before Composer 2.5, so benchmark comparisons should account for the intervening progress.
DeepSeek Chat (R1-based) is an open-source / open-weight model; Composer 2.5 is proprietary.
Direct benchmark comparisons are unavailable — Composer 2.5 and DeepSeek Chat (R1-based) don't publish scores on any of the same benchmarks.