What is the difference between ChatGPT-4o (March 2025) and Claude Opus 4.7?

ChatGPT-4o (March 2025) is developed by OpenAI while Claude Opus 4.7 is developed by Anthropic. ChatGPT-4o (March 2025) has a 128K token context window vs Claude Opus 4.7's 1.0M. You can compare their actual outputs across 32 challenges on Rival to see how they differ in practice.

Which is better, ChatGPT-4o (March 2025) or Claude Opus 4.7?

It depends on your use case. ChatGPT-4o (March 2025) and Claude Opus 4.7 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 32 challenges so you can judge which fits your needs best.

How much does ChatGPT-4o (March 2025) cost compared to Claude Opus 4.7?

ChatGPT-4o (March 2025) costs $5/M input tokens and Claude Opus 4.7 costs $5/M input tokens. Claude Opus 4.7 is $0.00/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 ChatGPT-4o (March 2025) and Claude Opus 4.7 on Rival?

This page shows a side-by-side comparison of ChatGPT-4o (March 2025) and Claude Opus 4.7 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 ChatGPT-4o (March 2025) and Claude Opus 4.7?

ChatGPT-4o (March 2025) is developed by OpenAI while Claude Opus 4.7 is developed by Anthropic. ChatGPT-4o (March 2025) has a 128K token context window vs Claude Opus 4.7's 1.0M. You can compare their actual outputs across 32 challenges on Rival to see how they differ in practice.

Which is better, ChatGPT-4o (March 2025) or Claude Opus 4.7?

It depends on your use case. ChatGPT-4o (March 2025) and Claude Opus 4.7 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 32 challenges so you can judge which fits your needs best.

How much does ChatGPT-4o (March 2025) cost compared to Claude Opus 4.7?

ChatGPT-4o (March 2025) costs $5/M input tokens and Claude Opus 4.7 costs $5/M input tokens. Claude Opus 4.7 is $0.00/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 ChatGPT-4o (March 2025) and Claude Opus 4.7 on Rival?

This page shows a side-by-side comparison of ChatGPT-4o (March 2025) and Claude Opus 4.7 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.

ChatGPT-4o (March 2025) vs Claude Opus 4.7: Which Is Better?

Updated Apr 2026

Our Verdict

Claude Opus 4.7

ChatGPT-4o (March 2025)Runner-up

No community votes yet. On paper, Claude Opus 4.7 has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

ChatGPT-4o (March 2025)

Input

$5.00

Output

$15.00

1.7× cheaper

Claude Opus 4.7

Input

$5.00

Output

$25.00

Writing DNA

Style Comparison

Similarity

66%

Claude Opus 4.7 uses 2.5x more headings

ChatGPT-4o (March 2025)

Claude Opus 4.7

55%Vocabulary64%

24wSentence Length20w

0.52Hedging0.51

3.3Bold4.6

6.0Lists3.8

0.94Emoji0.86

0.63Headings1.60

0.05Transitions0.03

Based on 15 + 27 text responses

Research

What we learned reading every model

ChatGPT-4o (March 2025) and Claude Opus 4.7 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

ChatGPT-4o (March 2025) vs MiniMax M3New provider

ChatGPT-4o (March 2025) vs Llama 4 MaverickNew provider

ChatGPT-4o (March 2025) vs Grok 3New provider

Updated Apr 2026

Our Verdict

Claude Opus 4.7

ChatGPT-4o (March 2025)Runner-up

No community votes yet. On paper, Claude Opus 4.7 has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

ChatGPT-4o (March 2025)

Input

$5.00

Output

$15.00

1.7× cheaper

Claude Opus 4.7

Input

$5.00

Output

$25.00

Writing DNA

Style Comparison

Similarity

66%

Claude Opus 4.7 uses 2.5x more headings

ChatGPT-4o (March 2025)

Claude Opus 4.7

55%Vocabulary64%

24wSentence Length20w

0.52Hedging0.51

3.3Bold4.6

6.0Lists3.8

0.94Emoji0.86

0.63Headings1.60

0.05Transitions0.03

Based on 15 + 27 text responses

Research

What we learned reading every model

ChatGPT-4o (March 2025) and Claude Opus 4.7 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

ChatGPT-4o (March 2025) vs MiniMax M3New provider

ChatGPT-4o (March 2025) vs Llama 4 MaverickNew provider

ChatGPT-4o (March 2025) vs Grok 3New provider