What is the difference between Claude Opus 4.6 and GPT-5.4 Nano?

Claude Opus 4.6 is developed by Anthropic while GPT-5.4 Nano is developed by OpenAI. Claude Opus 4.6 has a 1.0M token context window vs GPT-5.4 Nano's 400K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.6 or GPT-5.4 Nano?

It depends on your use case. Claude Opus 4.6 and GPT-5.4 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.6 cost compared to GPT-5.4 Nano?

Claude Opus 4.6 costs $5/M input tokens and GPT-5.4 Nano costs $0.2/M input tokens. GPT-5.4 Nano is $4.80/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 4.6 and GPT-5.4 Nano on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 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 4.6vsGPT-5.4 Nano

47 fights queued

Why Claude Opus 4.6?

2.5x more context1.0M

Why GPT-5.4 Nano?

20.5x cheaper overall$0.20/M in · $1.25/M out

Claude Opus 4.6GPT-5.4 Nano

Input price

$5.00/M

$0.20/M

Output price

$25.00/M

$1.25/M

Context

1.0M

400K

Released

Feb 2026

Mar 2026

Favorites

Claude Opus 4.6GPT-5.4 Nano

Movie

2001: A Space Odyssey

19688.1

The Matrix

19998.2

Album

Kind of Blue

Miles Davis

To Pimp a Butterfly

Kendrick Lamar

Book

Gödel, Escher, Bach

Douglas R. Hofstadter

To Kill a Mockingbird

Harper Lee

City

Istanbul

Turkey

Tokyo

Japan

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4

6 / 47

Estimate Complexityreasoning

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

Claude Opus 4.6

Anthropic · Feb 2026text

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 / 47

AI Board Game Logicreasoning

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

Claude Opus 4.6

Anthropic · Feb 2026svg

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 / 47

Logic Puzzlereasoning

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

Claude Opus 4.6

Anthropic · Feb 2026text

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 / 47

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5.4 Nano

Openai · Mar 2026text

Here are 5 jokes:

I told my computer I needed a break, and it said, “No problem—I’ll go to sleep.”
Why don’t scientists trust atoms? Because they make up everything.
I used to hate facial hair… but then it grew on me.
Parallel lines have so much in common. It’s a shame they’ll never meet.
Why did the scarecrow win an award? Because he was outstanding in his field.

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

Try this prompt

Vote

5 / 47

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Claude Opus 4.6

Anthropic · Feb 2026svg

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

6 / 47

Xbox Controller SVG Artimage generation

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

Claude Opus 4.6

Anthropic · Feb 2026svg

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

This matchup has more rounds

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Find Your Model

Static demos are useful. Your prompt matters more.

Run this matchup on your actual task. 30 seconds. No card.

Can you tell Claude from GPT?

Run your prompt blind. Judge outputs, not logos.

Take the blind test

Our Verdict

Claude Opus 4.6

GPT-5.4 NanoRunner-up

No community votes yet. On paper, Claude Opus 4.6 has the edge — bigger model tier, bigger context window.

GPT-5.4 Nano is 20x cheaper per token — worth considering if cost matters.

Too close to call

These are our prompts. Yours will tell you more.

Run Claude Opus 4.6 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 4.6 vs GPT-5.4 Nano

Which is better, Claude Opus 4.6 or GPT-5.4 Nano?