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

GPT-5-Codex-Mini vs GLM-4-Plus

OpenAI
GPT-5-Codex-Mini
Z.ai
GLM-4-Plus
Overview
CompanyOpenAIZ.ai
Release dateNov 8 2025Aug 29 2024
AccessProprietaryProprietary
Timeline
Release gapGLM-4-Plus shipped 436 days before GPT-5-Codex-Mini

Which is better: GPT-5-Codex-Mini or GLM-4-Plus?

GPT-5-Codex-Mini 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 436 days before GPT-5-Codex-Mini, 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 — GPT-5-Codex-Mini and GLM-4-Plus don't publish scores on any of the same benchmarks.

Frequently asked questions

GPT-5-Codex-Mini was released by OpenAI on Nov 8 2025.

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

Other comparisons