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

Mixtral 8×7B vs GPT-5-Codex-Mini

Mistral
Mixtral 8×7B
OpenAI
GPT-5-Codex-Mini
Overview
CompanyMistralOpenAI
Release dateDec 9 2023Nov 8 2025
AccessOpen WeightProprietary
Timeline
Release gapMixtral 8×7B shipped 700 days before GPT-5-Codex-Mini

Which is better: Mixtral 8×7B or GPT-5-Codex-Mini?

Mixtral 8×7B and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mixtral 8×7B shipped 700 days before GPT-5-Codex-Mini, so benchmark comparisons should account for the intervening progress.

Mixtral 8×7B is open weight, while GPT-5-Codex-Mini is proprietary.

Direct benchmark comparisons are unavailable — Mixtral 8×7B and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks.

Frequently asked questions

Mixtral 8×7B was released by Mistral on Dec 9 2023.

GPT-5-Codex-Mini was released by OpenAI on Nov 8 2025.

Mixtral 8×7B is an open weight model released by Mistral. GPT-5-Codex-Mini is a proprietary model released by OpenAI.

Other comparisons