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Composer 1.5 vs DeepSeek-Math

Cursor Composer 1.5 vs DeepSeek DeepSeek-Math — side-by-side specs.

Cursor
Composer 1.5
DeepSeek
DeepSeek-Math
Overview
CompanyCursorDeepSeek
Release dateFeb 8 2026Apr 3 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapDeepSeek-Math shipped 676 days before Composer 1.5

Which is better: Composer 1.5 or DeepSeek-Math?

Composer 1.5 and DeepSeek-Math don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-Math shipped 676 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.

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

Direct benchmark comparisons are unavailable — Composer 1.5 and DeepSeek-Math 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-Math released?
DeepSeek-Math was released by DeepSeek on Apr 3 2024.
Is Composer 1.5 or DeepSeek-Math open source?
DeepSeek-Math is an open-source / open-weight model released by DeepSeek. Composer 1.5 is a proprietary model released by Cursor.

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