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

Claude 2 vs GLM-4.5-Air

Anthropic
Claude 2
Z.ai
GLM-4.5-Air
Overview
CompanyAnthropicZ.ai
Release dateJul 11 2023Jul 28 2025
AccessProprietaryOpen Weight
Specifications
Parameters
106B
Benchmarks
Coding
SWE-Bench Verified
59.8%
Timeline
Release gapClaude 2 shipped 748 days before GLM-4.5-Air

Which is better: Claude 2 or GLM-4.5-Air?

Claude 2 and GLM-4.5-Air don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2 shipped 748 days before GLM-4.5-Air, so benchmark comparisons should account for the intervening progress.

Claude 2 is proprietary, while GLM-4.5-Air is open weight.

Direct benchmark comparisons are unavailable — Claude 2 and GLM-4.5-Air don't publish scores on any of the same benchmarks.

Frequently asked questions

Claude 2 was released by Anthropic on Jul 11 2023.

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

Claude 2 is a proprietary model released by Anthropic. GLM-4.5-Air is an open weight model released by Z.ai.

Other comparisons