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

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Claude Opus 4 vs Composer 1.5

2 vs 0 benchmarks won

Anthropic
Claude Opus 4
Cursor
Composer 1.5
Overview
CompanyAnthropicCursor
Release dateMay 22 2025Feb 8 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
79.6%
Software engineering
SWE-Bench Verified
72.5%
Multimodal understanding
MMMU
Timeline
Release gapClaude Opus 4 shipped 262 days before Composer 1.5

Which is better: Claude Opus 4 or Composer 1.5?

Claude Opus 4 leads Composer 1.5 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Opus 4 shipped 262 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 Opus 4 released?
Claude Opus 4 was released by Anthropic on May 22 2025.
When was Composer 1.5 released?
Composer 1.5 was released by Cursor on Feb 8 2026.

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