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

Composer vs Grok 4.20 Beta

Cursor
Composer
xAI
Grok 4.20 Beta
Overview
CompanyCursorxAI
Release dateOct 29 2025Feb 17 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapComposer shipped 111 days before Grok 4.20 Beta

Which is better: Composer or Grok 4.20 Beta?

Composer and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Composer shipped 111 days before Grok 4.20 Beta, 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 — Composer and Grok 4.20 Beta don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Composer released?
Composer was released by Cursor on Oct 29 2025.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.

Other comparisons