Composer 1.5 vs DeepSeek V3 Base
Cursor Composer 1.5 | DeepSeek DeepSeek V3 Base | |
|---|---|---|
| Overview | ||
| Company | Cursor | DeepSeek |
| Release date | Feb 8 2026 | Dec 2024 |
| Access | Proprietary | Open Weight |
| Benchmarks | ||
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. | 67% | — |
| Timeline | ||
| Release gap | DeepSeek V3 Base shipped 434 days before Composer 1.5 | |
Which is better: Composer 1.5 or DeepSeek V3 Base?
Composer 1.5 and DeepSeek V3 Base don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3 Base shipped 434 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.
Composer 1.5 is proprietary, while DeepSeek V3 Base is open weight.
Direct benchmark comparisons are unavailable — Composer 1.5 and DeepSeek V3 Base don't publish scores on any of the same benchmarks.
Frequently asked questions
Composer 1.5 was released by Cursor on Feb 8 2026.
DeepSeek V3 Base was released by DeepSeek on Dec 2024.
Composer 1.5 is a proprietary model released by Cursor. DeepSeek V3 Base is an open weight model released by DeepSeek.
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