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

Grok 4.20 Beta vs GLM-4-Plus

xAI
Grok 4.20 Beta
Z.ai
GLM-4-Plus
Overview
CompanyxAIZ.ai
Release dateFeb 17 2026Aug 29 2024
AccessProprietaryProprietary
Benchmarks
Nonsense detection
BullshitBench v2
56%
Timeline
Release gapGLM-4-Plus shipped 537 days before Grok 4.20 Beta

Which is better: Grok 4.20 Beta or GLM-4-Plus?

Grok 4.20 Beta and GLM-4-Plus don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4-Plus shipped 537 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 — Grok 4.20 Beta and GLM-4-Plus don't publish scores on any of the same benchmarks.

Frequently asked questions

Grok 4.20 Beta was released by xAI on Feb 17 2026.

GLM-4-Plus was released by Z.ai on Aug 29 2024.

Other comparisons