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Composer 1.5 vs DeepSeek V3-0324

Cursor Composer 1.5 vs DeepSeek DeepSeek V3-0324 — side-by-side specs.

Cursor
Composer 1.5
DeepSeek
DeepSeek V3-0324
Overview
CompanyCursorDeepSeek
Release dateFeb 8 2026Mar 24 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapDeepSeek V3-0324 shipped 321 days before Composer 1.5

Which is better: Composer 1.5 or DeepSeek V3-0324?

Composer 1.5 and DeepSeek V3-0324 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3-0324 shipped 321 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.

DeepSeek V3-0324 is an open-source / open-weight model; Composer 1.5 is proprietary.

Direct benchmark comparisons are unavailable — Composer 1.5 and DeepSeek V3-0324 don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Composer 1.5 released?
Composer 1.5 was released by Cursor on Feb 8 2026.
When was DeepSeek V3-0324 released?
DeepSeek V3-0324 was released by DeepSeek on Mar 24 2025.
Is Composer 1.5 or DeepSeek V3-0324 open source?
DeepSeek V3-0324 is an open-source / open-weight model released by DeepSeek. Composer 1.5 is a proprietary model released by Cursor.

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