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

o3-pro vs Grok‑1

OpenAI
o3-pro
SpaceXAI
Grok‑1
Overview
CompanyOpenAISpaceXAI
Release dateJun 10 2025Nov 3 2023
AccessProprietaryOpen Weight
Timeline
Release gapGrok‑1 shipped 585 days before o3-pro

Which is better: o3-pro or Grok‑1?

o3-pro 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 585 days before o3-pro, so benchmark comparisons should account for the intervening progress.

o3-pro is proprietary, while Grok‑1 is open weight.

Direct benchmark comparisons are unavailable — o3-pro and Grok‑1 don't publish scores on any of the same benchmarks.

Frequently asked questions

o3-pro was released by OpenAI on Jun 10 2025.

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

o3-pro is a proprietary model released by OpenAI. Grok‑1 is an open weight model released by SpaceXAI.

Other comparisons