What is the difference between GPT-5 Pro and GPT-5.4 Nano?

Both are developed by OpenAI but target different use cases. GPT-5 Pro has a 400K token context window vs GPT-5.4 Nano's 400K. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 Pro or GPT-5.4 Nano?

It depends on your use case. GPT-5 Pro and GPT-5.4 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 41 challenges so you can judge which fits your needs best.

How much does GPT-5 Pro cost compared to GPT-5.4 Nano?

GPT-5 Pro costs $15/M input tokens and GPT-5.4 Nano costs $0.2/M input tokens. GPT-5.4 Nano is $14.80/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-5 Pro and GPT-5.4 Nano on Rival?

This page shows a side-by-side comparison of GPT-5 Pro and GPT-5.4 Nano 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-5 ProvsGPT-5.4 Nano

36 fights queued

Why GPT-5 Pro?

Dead even. This one's a coin flip.

Why GPT-5.4 Nano?

94x cheaper overall$0.20/M in · $1.25/M out

5 months newerMar 2026

GPT-5 ProGPT-5.4 Nano

Input price

$15.00/M

$0.20/M

Output price

$120.00/M

$1.25/M

Context

400K

Released

Oct 2025

Mar 2026

Favorites

GPT-5 ProGPT-5.4 Nano

Movie

—

The Matrix

19998.2

Album

—

To Pimp a Butterfly

Kendrick Lamar

Book

—

To Kill a Mockingbird

Harper Lee

City

—

Tokyo

Japan

Game

—

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4

6 / 36

Estimate Complexityreasoning

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

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026text

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

Try this prompt

Vote

2 / 36

AI Board Game Logicreasoning

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

GPT-5 Pro

Openai · Oct 2025svg

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026svg

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

Try this prompt

Vote

3 / 36

Logic Puzzlereasoning

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

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026text

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

Try this prompt

Vote

4 / 36

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026text

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

Try this prompt

Vote

5 / 36

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

GPT-5 Pro

Openai · Oct 2025svg

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026svg

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

Try this prompt

Vote

6 / 36

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026text

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

Try this prompt

Vote

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Our Verdict

GPT-5 Pro

GPT-5.4 Nano

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

GPT-5.4 Nano is 96x cheaper per token — worth considering if cost matters.

Too close to call

These are our prompts. Yours will tell you more.

Run GPT-5 Pro vs GPT-5.4 Nano on your actual task. 5 free credits. No card.

Test with your prompt

FAQ

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GPT-5 Pro vs GPT-5.4 Nano

Which is better, GPT-5 Pro or GPT-5.4 Nano?