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

GLM-4 vs GLM-4.5-Air

Z.ai
GLM-4
Z.ai
GLM-4.5-Air
Overview
CompanyZ.aiZ.ai
Release dateJan 16 2024Jul 28 2025
AccessProprietaryOpen Weight
Specifications
Parameters
106B
Benchmarks
Coding
SWE-Bench Verified
59.8%
Timeline
Release gapGLM-4 shipped 559 days before GLM-4.5-Air

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

GLM-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. GLM-4 shipped 559 days before GLM-4.5-Air, so benchmark comparisons should account for the intervening progress.

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

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

Frequently asked questions

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

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

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

Other comparisons