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

GPT-5.6 Terra vs Grok‑1

OpenAI
GPT-5.6 Terra
SpaceXAI
Grok‑1
Overview
CompanyOpenAISpaceXAI
Release dateJun 26 2026Nov 3 2023
AccessProprietaryOpen Weight
Benchmarks
Nonsense detection
BullshitBench v2
53%
Agentic terminal coding
Terminal-Bench 2.1
84.3%
Timeline
Release gapGrok‑1 shipped 966 days before GPT-5.6 Terra

Which is better: GPT-5.6 Terra or Grok‑1?

GPT-5.6 Terra and Grok‑1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1 shipped 966 days before GPT-5.6 Terra, so benchmark comparisons should account for the intervening progress.

GPT-5.6 Terra is proprietary, while Grok‑1 is open weight.

Direct benchmark comparisons are unavailable — GPT-5.6 Terra and Grok‑1 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.

Grok‑1 was released by SpaceXAI on Nov 3 2023.

GPT-5.6 Terra is a proprietary model released by OpenAI. Grok‑1 is an open weight model released by SpaceXAI.

Other comparisons