What is the difference between GPT-5.4 Nano and OpenAI: GPT-5.6 Sol?

Both are developed by OpenAI but target different use cases. GPT-5.4 Nano has a 400K token context window vs OpenAI: GPT-5.6 Sol's 1.1M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 Nano or OpenAI: GPT-5.6 Sol?

It depends on your use case. GPT-5.4 Nano and OpenAI: GPT-5.6 Sol each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does GPT-5.4 Nano cost compared to OpenAI: GPT-5.6 Sol?

GPT-5.4 Nano costs $0.2/M input tokens and OpenAI: GPT-5.6 Sol costs $5/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 GPT-5.4 Nano and OpenAI: GPT-5.6 Sol on Rival?

This page shows a side-by-side comparison of GPT-5.4 Nano and OpenAI: GPT-5.6 Sol across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between GPT-5.4 Nano and OpenAI: GPT-5.6 Sol?

Both are developed by OpenAI but target different use cases. GPT-5.4 Nano has a 400K token context window vs OpenAI: GPT-5.6 Sol's 1.1M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 Nano or OpenAI: GPT-5.6 Sol?

It depends on your use case. GPT-5.4 Nano and OpenAI: GPT-5.6 Sol each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does GPT-5.4 Nano cost compared to OpenAI: GPT-5.6 Sol?

GPT-5.4 Nano costs $0.2/M input tokens and OpenAI: GPT-5.6 Sol costs $5/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 GPT-5.4 Nano and OpenAI: GPT-5.6 Sol on Rival?

This page shows a side-by-side comparison of GPT-5.4 Nano and OpenAI: GPT-5.6 Sol across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

GPT-5.4 Nano vs OpenAI: GPT-5.6 Sol: Which Is Better?

Updated Jul 2026

Our Verdict

OpenAI: GPT-5.6 Sol

GPT-5.4 NanoRunner-up

No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — bigger model tier, newer, bigger context window.

GPT-5.4 Nano is 24x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

GPT-5.4 Nano

Input

$0.20

25× cheaper

Output

$1.25

24× cheaper

OpenAI: GPT-5.6 Sol

Input

$5.00

Output

$30.00

GPT-5.4 Nano is cheaper on both — 25× input, 24× output

Writing DNA

Style Comparison

Similarity

48%

OpenAI: GPT-5.6 Sol uses 3.3x more emoji

GPT-5.4 Nano

OpenAI: GPT-5.6 Sol

51%Vocabulary63%

21wSentence Length15w

0.58Hedging0.79

7.1Bold3.4

5.5Lists3.8

0.01Emoji0.03

1.39Headings0.95

0.05Transitions0.08

Based on 23 + 27 text responses

Research

What we learned reading every model

GPT-5.4 Nano and OpenAI: GPT-5.6 Sol have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.4 Nano vs MiniMax M3New provider

GPT-5.4 Nano vs Claude Opus 4.1New provider

GPT-5.4 Nano vs GPT-5Same lab

Updated Jul 2026

Our Verdict

OpenAI: GPT-5.6 Sol

GPT-5.4 NanoRunner-up

No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — bigger model tier, newer, bigger context window.

GPT-5.4 Nano is 24x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

GPT-5.4 Nano

Input

$0.20

25× cheaper

Output

$1.25

24× cheaper

OpenAI: GPT-5.6 Sol

Input

$5.00

Output

$30.00

GPT-5.4 Nano is cheaper on both — 25× input, 24× output

Writing DNA

Style Comparison

Similarity

48%

OpenAI: GPT-5.6 Sol uses 3.3x more emoji

GPT-5.4 Nano

OpenAI: GPT-5.6 Sol

51%Vocabulary63%

21wSentence Length15w

0.58Hedging0.79

7.1Bold3.4

5.5Lists3.8

0.01Emoji0.03

1.39Headings0.95

0.05Transitions0.08

Based on 23 + 27 text responses

Research

What we learned reading every model

GPT-5.4 Nano and OpenAI: GPT-5.6 Sol have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.4 Nano vs MiniMax M3New provider

GPT-5.4 Nano vs Claude Opus 4.1New provider

GPT-5.4 Nano vs GPT-5Same lab