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

Grok 4 vs GLM-4.5-Air

xAI
Grok 4
Z.ai
GLM-4.5-Air
Overview
CompanyxAIZ.ai
Release dateJul 9 2025Jul 28 2025
AccessProprietaryOpen Weight
Specifications
Parameters
106B
Benchmarks
Coding
SWE-Bench Verified
59.8%
Timeline
Release gapGrok 4 shipped 19 days before GLM-4.5-Air

Which is better: Grok 4 or GLM-4.5-Air?

Grok 4 and GLM-4.5-Air don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4 shipped 19 days before GLM-4.5-Air, so benchmark comparisons should account for the intervening progress.

Grok 4 is proprietary, while GLM-4.5-Air is open weight.

Direct benchmark comparisons are unavailable — Grok 4 and GLM-4.5-Air don't publish scores on any of the same benchmarks.

Frequently asked questions

Grok 4 was released by xAI on Jul 9 2025.

GLM-4.5-Air was released by Z.ai on Jul 28 2025.

Grok 4 is a proprietary model released by xAI. GLM-4.5-Air is an open weight model released by Z.ai.

Other comparisons