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

Grok Code Fast 1 vs GLM-4

xAI
Grok Code Fast 1
Z.ai
GLM-4
Overview
CompanyxAIZ.ai
Release dateAug 28 2025Jan 16 2024
AccessProprietaryProprietary
Timeline
Release gapGLM-4 shipped 590 days before Grok Code Fast 1

Which is better: Grok Code Fast 1 or GLM-4?

Grok Code Fast 1 and GLM-4 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4 shipped 590 days before Grok Code Fast 1, 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 Code Fast 1 and GLM-4 don't publish scores on any of the same benchmarks.

Frequently asked questions

Grok Code Fast 1 was released by xAI on Aug 28 2025.

GLM-4 was released by Z.ai on Jan 16 2024.

Other comparisons