Cursor Composer 1.5 vs DeepSeek DeepSeek-V4-Flash — side-by-side specs.
Cursor Composer 1.5 | DeepSeek DeepSeek-V4-Flash | |
|---|---|---|
| Overview | ||
| Company | Cursor | DeepSeek |
| Release date | Feb 8 2026 | Apr 24 2026 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 88.1% |
| Timeline | ||
| Release gap | Composer 1.5 shipped 75 days before DeepSeek-V4-Flash | |
Composer 1.5 and DeepSeek-V4-Flash don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Composer 1.5 shipped 75 days before DeepSeek-V4-Flash, so benchmark comparisons should account for the intervening progress.
DeepSeek-V4-Flash is an open-source / open-weight model; Composer 1.5 is proprietary.
Direct benchmark comparisons are unavailable — Composer 1.5 and DeepSeek-V4-Flash don't publish scores on any of the same benchmarks.