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

GPT-5.1-Codex-Max vs Grok‑1

OpenAI
GPT-5.1-Codex-Max
SpaceXAI
Grok‑1
Overview
CompanyOpenAISpaceXAI
Release dateNov 19 2025Nov 3 2023
AccessProprietaryOpen Weight
Timeline
Release gapGrok‑1 shipped 747 days before GPT-5.1-Codex-Max

Which is better: GPT-5.1-Codex-Max or Grok‑1?

GPT-5.1-Codex-Max 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 747 days before GPT-5.1-Codex-Max, so benchmark comparisons should account for the intervening progress.

GPT-5.1-Codex-Max is proprietary, while Grok‑1 is open weight.

Direct benchmark comparisons are unavailable — GPT-5.1-Codex-Max and Grok‑1 don't publish scores on any of the same benchmarks.

Frequently asked questions

GPT-5.1-Codex-Max was released by OpenAI on Nov 19 2025.

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

GPT-5.1-Codex-Max is a proprietary model released by OpenAI. Grok‑1 is an open weight model released by SpaceXAI.

Other comparisons