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

Codestral 22B vs Grok 4 Heavy

Mistral
Codestral 22B
SpaceXAI
Grok 4 Heavy
Overview
CompanyMistralSpaceXAI
Release dateMay 29 2024Jul 9 2025
AccessProprietaryProprietary
Timeline
Release gapCodestral 22B shipped 406 days before Grok 4 Heavy

Which is better: Codestral 22B or Grok 4 Heavy?

Codestral 22B and Grok 4 Heavy don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral 22B shipped 406 days before Grok 4 Heavy, 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 — Codestral 22B and Grok 4 Heavy don't publish scores on any of the same benchmarks.

Frequently asked questions

Codestral 22B was released by Mistral on May 29 2024.

Grok 4 Heavy was released by SpaceXAI on Jul 9 2025.

Other comparisons