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

Mixtral 8×22B vs GPT-5.1-Codex-Max

Mistral
Mixtral 8×22B
OpenAI
GPT-5.1-Codex-Max
Overview
CompanyMistralOpenAI
Release dateApr 10 2024Nov 19 2025
AccessOpen WeightProprietary
Timeline
Release gapMixtral 8×22B shipped 588 days before GPT-5.1-Codex-Max

Which is better: Mixtral 8×22B or GPT-5.1-Codex-Max?

Mixtral 8×22B and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mixtral 8×22B shipped 588 days before GPT-5.1-Codex-Max, so benchmark comparisons should account for the intervening progress.

Mixtral 8×22B is open weight, while GPT-5.1-Codex-Max is proprietary.

Direct benchmark comparisons are unavailable — Mixtral 8×22B and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks.

Frequently asked questions

Mixtral 8×22B was released by Mistral on Apr 10 2024.

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

Mixtral 8×22B is an open weight model released by Mistral. GPT-5.1-Codex-Max is a proprietary model released by OpenAI.

Other comparisons