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

Composer vs DeepSeek R1-0528

Cursor
Composer
DeepSeek
DeepSeek R1-0528
Overview
CompanyCursorDeepSeek
Release dateOct 29 2025May 28 2025
AccessProprietaryOpen Weight
Benchmarks
Nonsense detection
BullshitBench v2
8%
Timeline
Release gapDeepSeek R1-0528 shipped 154 days before Composer

Which is better: Composer or DeepSeek R1-0528?

Composer and DeepSeek R1-0528 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek R1-0528 shipped 154 days before Composer, so benchmark comparisons should account for the intervening progress.

Composer is proprietary, while DeepSeek R1-0528 is open weight.

Direct benchmark comparisons are unavailable — Composer and DeepSeek R1-0528 don't publish scores on any of the same benchmarks.

Frequently asked questions

Composer was released by Cursor on Oct 29 2025.

DeepSeek R1-0528 was released by DeepSeek on May 28 2025.

Composer is a proprietary model released by Cursor. DeepSeek R1-0528 is an open weight model released by DeepSeek.

Other comparisons