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Composer 2 vs DeepSeek V3-0324

Cursor Composer 2 vs DeepSeek DeepSeek V3-0324 — side-by-side specs.

Cursor
Composer 2
DeepSeek
DeepSeek V3-0324
Overview
CompanyCursorDeepSeek
Release dateMar 20 2026Mar 24 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek V3-0324 shipped 361 days before Composer 2

Which is better: Composer 2 or DeepSeek V3-0324?

Composer 2 and DeepSeek V3-0324 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. DeepSeek V3-0324 shipped 361 days before Composer 2, so benchmark comparisons should account for the intervening progress.

DeepSeek V3-0324 is an open-source / open-weight model; Composer 2 is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Composer 2 released?
Composer 2 was released by Cursor on Mar 20 2026.
When was DeepSeek V3-0324 released?
DeepSeek V3-0324 was released by DeepSeek on Mar 24 2025.
Is Composer 2 or DeepSeek V3-0324 open source?
DeepSeek V3-0324 is an open-source / open-weight model released by DeepSeek. Composer 2 is a proprietary model released by Cursor.

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