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

Mistral NeMo vs GPT-5-Codex-Mini

Mistral
Mistral NeMo
OpenAI
GPT-5-Codex-Mini
Overview
CompanyMistralOpenAI
Release dateJul 18 2024Nov 8 2025
AccessOpen WeightProprietary
Specifications
Parameters
12B
Context window
128k
Timeline
Release gapMistral NeMo shipped 478 days before GPT-5-Codex-Mini

Which is better: Mistral NeMo or GPT-5-Codex-Mini?

Mistral NeMo and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral NeMo shipped 478 days before GPT-5-Codex-Mini, so benchmark comparisons should account for the intervening progress.

Mistral NeMo is open weight, while GPT-5-Codex-Mini is proprietary.

Direct benchmark comparisons are unavailable — Mistral NeMo and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks.

Frequently asked questions

Mistral NeMo was released by Mistral on Jul 18 2024.

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

Mistral NeMo is an open weight model released by Mistral. GPT-5-Codex-Mini is a proprietary model released by OpenAI.

Other comparisons