What is the difference between Claude Opus 4.1 and GPT-5.4 Nano?

Claude Opus 4.1 is developed by Anthropic while GPT-5.4 Nano is developed by OpenAI. Claude Opus 4.1 has a 200K token context window vs GPT-5.4 Nano's 400K. You can compare their actual outputs across 27 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.1 or GPT-5.4 Nano?

It depends on your use case. Claude Opus 4.1 and GPT-5.4 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 27 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.1 cost compared to GPT-5.4 Nano?

Claude Opus 4.1 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 Claude Opus 4.1 and GPT-5.4 Nano on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 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

Claude Opus 4.1vsGPT-5.4 Nano

27 fights queued

Why Claude Opus 4.1?

Dead even. This one's a coin flip.

Why GPT-5.4 Nano?

61.4x cheaper overall$0.20/M in · $1.25/M out

2x more context400K

7 months newerMar 2026

Claude Opus 4.1GPT-5.4 Nano

Input price

$15.00/M

$0.20/M

Output price

$75.00/M

$1.25/M

Context

200K

400K

Released

Aug 2025

Mar 2026

Favorites

Claude Opus 4.1GPT-5.4 Nano

Movie

Her

20137.8

The Matrix

19998.2

Album

Kind of Blue

Miles Davis

To Pimp a Butterfly

Kendrick Lamar

Book

Братья Карамазовы

Фёдор Михайлович Достоевский

To Kill a Mockingbird

Harper Lee

City

Istanbul

Turkey

Tokyo

Japan

Game

Portal 2

Shooter, Puzzle4.6

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4

6 / 27

Logic Puzzlereasoning

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

Claude Opus 4.1

Anthropic · Aug 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 / 27

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Claude Opus 4.1

Anthropic · Aug 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

3 / 27

Xbox Controller SVG Artimage generation

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

Claude Opus 4.1

Anthropic · Aug 2025svg

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026svg

Try this prompt

Vote

4 / 27

Realistic AI Interviewconversation

Tests an AI's ability to simulate personalities and predict future trends

Claude Opus 4.1

Anthropic · Aug 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 / 27

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Claude Opus 4.1

Anthropic · Aug 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

6 / 27

Minimalist Landing Pageweb design

Tests an AI's ability to generate a complete, working landing page

Claude Opus 4.1

Anthropic · Aug 2025website

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026website

Try this prompt

Vote

This matchup has more rounds

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Find Your Model

Static demos are useful. Your prompt matters more.

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Can you tell Claude from GPT?

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Our Verdict

Claude Opus 4.1

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 60x cheaper per token — worth considering if cost matters.

Too close to call

These are our prompts. Yours will tell you more.

Run Claude Opus 4.1 vs GPT-5.4 Nano on your actual task. 5 free credits. No card.

Test with your prompt

FAQ

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Claude Opus 4.1 vs GPT-5.4 Nano

Which is better, Claude Opus 4.1 or GPT-5.4 Nano?