AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Home/Compare/Composer vs DeepSeek Chat (R1-based)

Composer vs DeepSeek Chat (R1-based)

Cursor Composer vs DeepSeek DeepSeek Chat (R1-based) — side-by-side specs.

Cursor
Composer
DeepSeek
DeepSeek Chat (R1-based)
Overview
CompanyCursorDeepSeek
Release dateOct 29 2025Jan 20 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 Chat (R1-based) shipped 282 days before Composer

Which is better: Composer or DeepSeek Chat (R1-based)?

Composer and DeepSeek Chat (R1-based) do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. DeepSeek Chat (R1-based) shipped 282 days before Composer, so benchmark comparisons should account for the intervening progress.

DeepSeek Chat (R1-based) is an open-source / open-weight model; Composer 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 released?
Composer was released by Cursor on Oct 29 2025.
When was DeepSeek Chat (R1-based) released?
DeepSeek Chat (R1-based) was released by DeepSeek on Jan 20 2025.
Is Composer or DeepSeek Chat (R1-based) open source?
DeepSeek Chat (R1-based) is an open-source / open-weight model released by DeepSeek. Composer is a proprietary model released by Cursor.

Other comparisons