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

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Claude Opus 4.6 vs Composer

2 vs 0 benchmarks won

Anthropic
Claude Opus 4.6
Cursor
Composer
Overview
CompanyAnthropicCursor
Release dateFeb 5 2026Oct 29 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
91.3%
Software engineering
SWE-Bench Verified
80.8%
Multimodal understanding
MMMU
Timeline
Release gapComposer shipped 99 days before Claude Opus 4.6

Which is better: Claude Opus 4.6 or Composer?

Claude Opus 4.6 leads Composer on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Composer shipped 99 days before Claude Opus 4.6, 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 4.6 released?
Claude Opus 4.6 was released by Anthropic on Feb 5 2026.
When was Composer released?
Composer was released by Cursor on Oct 29 2025.

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