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Composer 2 vs DeepSeek-V4-Flash

0 vs 1 benchmarks won

Cursor
Composer 2
DeepSeek
DeepSeek-V4-Flash
Overview
CompanyCursorDeepSeek
Release dateMar 20 2026Apr 24 2026
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
88.1%
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapComposer 2 shipped 35 days before DeepSeek-V4-Flash

Which is better: Composer 2 or DeepSeek-V4-Flash?

DeepSeek-V4-Flash leads Composer 2 on 1 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Composer 2 shipped 35 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 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-V4-Flash released?
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
Is Composer 2 or DeepSeek-V4-Flash open source?
DeepSeek-V4-Flash is an open-source / open-weight model released by DeepSeek. Composer 2 is a proprietary model released by Cursor.

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