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Claude 2.1 vs Composer

Anthropic Claude 2.1 vs Cursor Composer — side-by-side specs.

Anthropic
Claude 2.1
Cursor
Composer
Overview
CompanyAnthropicCursor
Release dateNov 21 2023Oct 29 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapClaude 2.1 shipped 708 days before Composer

Which is better: Claude 2.1 or Composer?

Claude 2.1 and Composer do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Claude 2.1 shipped 708 days before Composer, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

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 Claude 2.1 released?
Claude 2.1 was released by Anthropic on Nov 21 2023.
When was Composer released?
Composer was released by Cursor on Oct 29 2025.

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