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

Claude 2.1 vs Grok 4.20 Beta

Anthropic
Claude 2.1
xAI
Grok 4.20 Beta
Overview
CompanyAnthropicxAI
Release dateNov 21 2023Feb 17 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapClaude 2.1 shipped 819 days before Grok 4.20 Beta

Which is better: Claude 2.1 or Grok 4.20 Beta?

Claude 2.1 and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2.1 shipped 819 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 — Claude 2.1 and Grok 4.20 Beta don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Claude 2.1 released?
Claude 2.1 was released by Anthropic on Nov 21 2023.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.

Other comparisons