What is the difference between GPT-4.1 Mini and GPT-5 Codex?

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 50 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 Mini or GPT-5 Codex?

It depends on your use case. GPT-4.1 Mini and GPT-5 Codex each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 50 challenges so you can judge which fits your needs best.

How can I compare GPT-4.1 Mini and GPT-5 Codex on Rival?

This page shows a side-by-side comparison of GPT-4.1 Mini and GPT-5 Codex across shared challenges. You can vote on which model produced the better output, and Pro users can create custom challenges to test both models with their own prompts.

Rival

Updated Sep 23, 2025

GPT-4.1 MinivsGPT-5 Codex

45 fights queued

Why GPT-4.1 Mini?

Dead even. This one's a coin flip.

Why GPT-5 Codex?

5 months newerSep 2025

GPT-4.1 MiniGPT-5 Codex

Input price

$0.40/M

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Output price

$1.60/M

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Context

1.0M

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Released

Apr 2025

Sep 2025

Favorites

GPT-4.1 MiniGPT-5 Codex

Movie

Inception

20108.4

Blade Runner

19827.9

Album

Dark Side Of The Moon

suisside

Kind of Blue

Miles Davis

Book

Sapiens

Yuval Noah Harari

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City

Tokyo

Japan

Tokyo

Japan

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

Minecraft

Action, Arcade4.4

12 / 45

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

GPT-4.1 Mini

Openai · Apr 2025text

Nothing here. The model returned empty. We stared at it for a while.

GPT-4.1 Mini vs GPT-5 Codex

Which is better, GPT-4.1 Mini or GPT-5 Codex?