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

Mistral NeMo vs GPT-5.4-Pro

Mistral
Mistral NeMo
OpenAI
GPT-5.4-Pro
Overview
CompanyMistralOpenAI
Release dateJul 18 2024Mar 5 2026
AccessOpen WeightProprietary
Specifications
Parameters
12B
Context window
128k
Benchmarks
Web browsing
BrowseComp
89.3%
Multidisciplinary reasoning
Humanity's Last Exam · with tools
58.7%
Abstract reasoning
ARC-AGI-2
83.3%
Advanced math
FrontierMath · Tier 1–3
50%
Advanced math
FrontierMath · Tier 4
38%
Science
GPQA Diamond
94.4%
Knowledge work
GDPval (win/tie rate)
82%
Timeline
Release gapMistral NeMo shipped 595 days before GPT-5.4-Pro

Which is better: Mistral NeMo or GPT-5.4-Pro?

Mistral NeMo and GPT-5.4-Pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral NeMo shipped 595 days before GPT-5.4-Pro, so benchmark comparisons should account for the intervening progress.

Mistral NeMo is open weight, while GPT-5.4-Pro is proprietary.

Direct benchmark comparisons are unavailable — Mistral NeMo and GPT-5.4-Pro don't publish scores on any of the same benchmarks.

Frequently asked questions

Mistral NeMo was released by Mistral on Jul 18 2024.

GPT-5.4-Pro was released by OpenAI on Mar 5 2026.

Mistral NeMo is an open weight model released by Mistral. GPT-5.4-Pro is a proprietary model released by OpenAI.

Other comparisons