Cursor Composer 1.5 vs DeepSeek DeepSeek V3.1 Terminus — side-by-side specs.
Cursor Composer 1.5 | DeepSeek DeepSeek V3.1 Terminus | |
|---|---|---|
| Overview | ||
| Company | Cursor | DeepSeek |
| Release date | Feb 8 2026 | Sep 22 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
| Timeline | ||
| Release gap | DeepSeek V3.1 Terminus shipped 139 days before Composer 1.5 | |
Composer 1.5 and DeepSeek V3.1 Terminus don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3.1 Terminus shipped 139 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.
DeepSeek V3.1 Terminus is an open-source / open-weight model; Composer 1.5 is proprietary.
Direct benchmark comparisons are unavailable — Composer 1.5 and DeepSeek V3.1 Terminus don't publish scores on any of the same benchmarks.