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Composer 2 vs DeepSeek-LLM

Cursor Composer 2 vs DeepSeek DeepSeek-LLM — side-by-side specs.

Cursor
Composer 2
DeepSeek
DeepSeek-LLM
Overview
CompanyCursorDeepSeek
Release dateMar 20 2026Nov 29 2023
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek-LLM shipped 842 days before Composer 2

Which is better: Composer 2 or DeepSeek-LLM?

Composer 2 and DeepSeek-LLM do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. DeepSeek-LLM shipped 842 days before Composer 2, so benchmark comparisons should account for the intervening progress.

DeepSeek-LLM 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-LLM released?
DeepSeek-LLM was released by DeepSeek on Nov 29 2023.
Is Composer 2 or DeepSeek-LLM open source?
DeepSeek-LLM is an open-source / open-weight model released by DeepSeek. Composer 2 is a proprietary model released by Cursor.

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