What is the difference between Claude Opus 4.1 and OpenAI: GPT-5.6 Sol?

Claude Opus 4.1 is developed by Anthropic while OpenAI: GPT-5.6 Sol is developed by OpenAI. Claude Opus 4.1 has a 200K 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, Claude Opus 4.1 or OpenAI: GPT-5.6 Sol?

It depends on your use case. Claude Opus 4.1 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 Claude Opus 4.1 cost compared to OpenAI: GPT-5.6 Sol?

Claude Opus 4.1 costs $15/M input tokens and OpenAI: GPT-5.6 Sol costs $5/M input tokens. OpenAI: GPT-5.6 Sol is $10.00/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 OpenAI: GPT-5.6 Sol on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 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 Claude Opus 4.1 and OpenAI: GPT-5.6 Sol?

Claude Opus 4.1 is developed by Anthropic while OpenAI: GPT-5.6 Sol is developed by OpenAI. Claude Opus 4.1 has a 200K 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, Claude Opus 4.1 or OpenAI: GPT-5.6 Sol?

It depends on your use case. Claude Opus 4.1 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 Claude Opus 4.1 cost compared to OpenAI: GPT-5.6 Sol?

Claude Opus 4.1 costs $15/M input tokens and OpenAI: GPT-5.6 Sol costs $5/M input tokens. OpenAI: GPT-5.6 Sol is $10.00/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 OpenAI: GPT-5.6 Sol on Rival?

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

Claude Opus 4.1 vs OpenAI: GPT-5.6 Sol: Which Is Better?

Updated Jul 2026

Our Verdict

OpenAI: GPT-5.6 Sol

Claude Opus 4.1Runner-up

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

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.1

Input

$15.00

Output

$75.00

OpenAI: GPT-5.6 Sol

Input

$5.00

3.0× cheaper

Output

$30.00

2.5× cheaper

OpenAI: GPT-5.6 Sol is cheaper on both — 3.0× input, 2.5× output

Writing DNA

Style Comparison

Similarity

56%

Claude Opus 4.1 uses 11.7x more emoji

Claude Opus 4.1

OpenAI: GPT-5.6 Sol

61%Vocabulary63%

87wSentence Length15w

0.54Hedging0.79

5.1Bold3.4

6.7Lists3.8

0.38Emoji0.03

1.68Headings0.95

0.13Transitions0.08

Based on 17 + 27 text responses

Research

What we learned reading every model

Claude Opus 4.1 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

Claude Opus 4.1 vs MiniMax M3New provider

Claude Opus 4.1 vs GPT-5Cross-provider

Claude Opus 4.1 vs Llama 4 MaverickNew provider

Updated Jul 2026

Our Verdict

OpenAI: GPT-5.6 Sol

Claude Opus 4.1Runner-up

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

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.1

Input

$15.00

Output

$75.00

OpenAI: GPT-5.6 Sol

Input

$5.00

3.0× cheaper

Output

$30.00

2.5× cheaper

OpenAI: GPT-5.6 Sol is cheaper on both — 3.0× input, 2.5× output

Writing DNA

Style Comparison

Similarity

56%

Claude Opus 4.1 uses 11.7x more emoji

Claude Opus 4.1

OpenAI: GPT-5.6 Sol

61%Vocabulary63%

87wSentence Length15w

0.54Hedging0.79

5.1Bold3.4

6.7Lists3.8

0.38Emoji0.03

1.68Headings0.95

0.13Transitions0.08

Based on 17 + 27 text responses

Research

What we learned reading every model

Claude Opus 4.1 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

Claude Opus 4.1 vs MiniMax M3New provider

Claude Opus 4.1 vs GPT-5Cross-provider

Claude Opus 4.1 vs Llama 4 MaverickNew provider