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Claude 1 vs Composer 1.5

Anthropic Claude 1 vs Cursor Composer 1.5 — side-by-side specs.

Anthropic
Claude 1
Cursor
Composer 1.5
Overview
CompanyAnthropicCursor
Release dateMar 14 2023Feb 8 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapClaude 1 shipped 1062 days before Composer 1.5

Which is better: Claude 1 or Composer 1.5?

Claude 1 and Composer 1.5 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Claude 1 shipped 1062 days before Composer 1.5, 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 1 released?
Claude 1 was released by Anthropic on Mar 14 2023.
When was Composer 1.5 released?
Composer 1.5 was released by Cursor on Feb 8 2026.

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