What is the difference between GPT-4o (Omni) and GPT-5.4 Mini?

Both are developed by OpenAI but target different use cases. GPT-4o (Omni) has a 128K token context window vs GPT-5.4 Mini's 400K. You can compare their actual outputs across 51 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o (Omni) or GPT-5.4 Mini?

It depends on your use case. GPT-4o (Omni) and GPT-5.4 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

How much does GPT-4o (Omni) cost compared to GPT-5.4 Mini?

GPT-4o (Omni) costs $2.5/M input tokens and GPT-5.4 Mini costs $0.75/M input tokens. GPT-5.4 Mini is $1.75/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-4o (Omni) and GPT-5.4 Mini on Rival?

This page shows a side-by-side comparison of GPT-4o (Omni) and GPT-5.4 Mini 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 Mar 17, 2026

GPT-4o (Omni)vsGPT-5.4 Mini

46 fights queued

Why GPT-4o (Omni)?

Dead even. This one's a coin flip.

Why GPT-5.4 Mini?

2.3x cheaper overall$0.75/M in · $4.50/M out

3.1x more context400K

22 months newerMar 2026

GPT-4o (Omni)GPT-5.4 Mini

Input price

$2.50/M

$0.75/M

Output price

$10.00/M

$4.50/M

Context

128K

400K

Released

May 2024

Mar 2026

Favorites

GPT-4o (Omni)GPT-5.4 Mini

Movie

Inception

20108.4

The Godfather

19728.7

Album

Dark Side Of The Moon

suisside

Kid A

Radiohead

Book

To Kill a Mockingbird

Harper Lee

Pride and Prejudice

Jane Austen

City

Kyoto

Japan

Kyoto

Japan

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

6 / 46

Estimate Complexityreasoning

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

GPT-4o (Omni)

Openai · May 2024text

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

Try this prompt

GPT-5.4 Mini

Openai · Mar 2026text

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

Try this prompt

Vote

2 / 46

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

GPT-4o (Omni)

Openai · May 2024svg

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

Try this prompt

GPT-5.4 Mini

Openai · Mar 2026svg

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

Try this prompt

Vote

3 / 46

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

GPT-4o (Omni)

Openai · May 2024text

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

Try this prompt

GPT-5.4 Mini

Openai · Mar 2026text

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

Try this prompt

Vote

4 / 46

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

GPT-4o (Omni)

Openai · May 2024text

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

Try this prompt

GPT-5.4 Mini

Openai · Mar 2026text

Here are 5 jokes:

I told my computer I needed a break, and now it won’t stop sending me KitKat ads.
Why don’t scientists trust atoms? Because they make up everything.
I used to play piano by ear, but now I use my hands.
Why did the scarecrow win an award? Because he was outstanding in his field.
I’m reading a book on anti-gravity. It’s impossible to put down.

How many are unique? 5 — all five are different.

Try this prompt

Vote

5 / 46

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

GPT-4o (Omni)

Openai · May 2024svg

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

Try this prompt

GPT-5.4 Mini

Openai · Mar 2026svg

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

Try this prompt

Vote

6 / 46

Xbox Controller SVG Artimage generation

Tests an AI's ability to create detailed SVG illustrations of gaming hardware

GPT-4o (Omni)

Openai · May 2024svg

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

Try this prompt

GPT-5.4 Mini

Openai · Mar 2026svg

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

Try this prompt

Vote

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Our Verdict

GPT-4o (Omni)

GPT-5.4 Mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

These are our prompts. Yours will tell you more.

Run GPT-4o (Omni) vs GPT-5.4 Mini on your actual task. 5 free credits. No card.

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GPT-4o (Omni) vs GPT-5.4 Mini

Which is better, GPT-4o (Omni) or GPT-5.4 Mini?