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

Mistral Large 3 vs Grok 4 Heavy

Mistral
Mistral Large 3
SpaceXAI
Grok 4 Heavy
Overview
CompanyMistralSpaceXAI
Release dateDec 2 2025Jul 9 2025
AccessOpen WeightProprietary
Timeline
Release gapGrok 4 Heavy shipped 146 days before Mistral Large 3

Which is better: Mistral Large 3 or Grok 4 Heavy?

Mistral Large 3 and Grok 4 Heavy don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4 Heavy shipped 146 days before Mistral Large 3, so benchmark comparisons should account for the intervening progress.

Mistral Large 3 is open weight, while Grok 4 Heavy is proprietary.

Direct benchmark comparisons are unavailable — Mistral Large 3 and Grok 4 Heavy don't publish scores on any of the same benchmarks.

Frequently asked questions

Mistral Large 3 was released by Mistral on Dec 2 2025.

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

Mistral Large 3 is an open weight model released by Mistral. Grok 4 Heavy is a proprietary model released by SpaceXAI.

Other comparisons