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

GPT-5.6 Terra vs GLM-4

OpenAI
GPT-5.6 Terra
Z.ai
GLM-4
Overview
CompanyOpenAIZ.ai
Release dateJun 26 2026Jan 16 2024
AccessProprietaryProprietary
Benchmarks
Agentic terminal coding
Terminal-Bench 2.1
84.3%
Timeline
Release gapGLM-4 shipped 892 days before GPT-5.6 Terra

Which is better: GPT-5.6 Terra or GLM-4?

GPT-5.6 Terra 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 892 days before GPT-5.6 Terra, 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-5.6 Terra and GLM-4 don't publish scores on any of the same benchmarks.

Frequently asked questions

GPT-5.6 Terra was released by OpenAI on Jun 26 2026.

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

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