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Composer 1.5 vs DeepSeek Coder V2

Cursor Composer 1.5 vs DeepSeek DeepSeek Coder V2 — side-by-side specs.

Cursor
Composer 1.5
DeepSeek
DeepSeek Coder V2
Overview
CompanyCursorDeepSeek
Release dateFeb 8 2026Jun 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek Coder V2 shipped 617 days before Composer 1.5

Which is better: Composer 1.5 or DeepSeek Coder V2?

Composer 1.5 and DeepSeek Coder V2 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. DeepSeek Coder V2 shipped 617 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.

DeepSeek Coder V2 is an open-source / open-weight model; Composer 1.5 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 1.5 released?
Composer 1.5 was released by Cursor on Feb 8 2026.
When was DeepSeek Coder V2 released?
DeepSeek Coder V2 was released by DeepSeek on Jun 2024.
Is Composer 1.5 or DeepSeek Coder V2 open source?
DeepSeek Coder V2 is an open-source / open-weight model released by DeepSeek. Composer 1.5 is a proprietary model released by Cursor.

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