What is the difference between ChatGPT-4o (March 2025) and GPT-5?

Both are developed by OpenAI but target different use cases. ChatGPT-4o (March 2025) has a 128K token context window vs GPT-5's 400K. 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 GPT-5?

It depends on your use case. ChatGPT-4o (March 2025) and GPT-5 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 GPT-5?

ChatGPT-4o (March 2025) costs $5/M input tokens and GPT-5 costs $1.25/M input tokens. GPT-5 is $3.75/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 GPT-5 on Rival?

This page shows a side-by-side comparison of ChatGPT-4o (March 2025) and GPT-5 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 GPT-5?

Both are developed by OpenAI but target different use cases. ChatGPT-4o (March 2025) has a 128K token context window vs GPT-5's 400K. 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 GPT-5?

It depends on your use case. ChatGPT-4o (March 2025) and GPT-5 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 GPT-5?

ChatGPT-4o (March 2025) costs $5/M input tokens and GPT-5 costs $1.25/M input tokens. GPT-5 is $3.75/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 GPT-5 on Rival?

This page shows a side-by-side comparison of ChatGPT-4o (March 2025) and GPT-5 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 GPT-5: Which Is Better?

Updated Aug 2025

Our Verdict

GPT-5

ChatGPT-4o (March 2025)Runner-up

No community votes yet. On paper, GPT-5 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

GPT-5

Input

$1.25

4.0× cheaper

Output

$10.00

1.5× cheaper

GPT-5 is cheaper on both — 4.0× input, 1.5× output

Writing DNA

Style Comparison

Similarity

39%

ChatGPT-4o (March 2025) uses 94.5x more emoji

ChatGPT-4o (March 2025)

GPT-5

55%Vocabulary65%

24wSentence Length13w

0.52Hedging0.20

3.3Bold0.2

6.0Lists4.6

0.94Emoji0.00

0.63Headings0.16

0.05Transitions0.03

Based on 15 + 16 text responses

Research

What we learned reading every model

ChatGPT-4o (March 2025) and GPT-5 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 Claude Opus 4New provider

Updated Aug 2025

Our Verdict

GPT-5

ChatGPT-4o (March 2025)Runner-up

No community votes yet. On paper, GPT-5 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

GPT-5

Input

$1.25

4.0× cheaper

Output

$10.00

1.5× cheaper

GPT-5 is cheaper on both — 4.0× input, 1.5× output

Writing DNA

Style Comparison

Similarity

39%

ChatGPT-4o (March 2025) uses 94.5x more emoji

ChatGPT-4o (March 2025)

GPT-5

55%Vocabulary65%

24wSentence Length13w

0.52Hedging0.20

3.3Bold0.2

6.0Lists4.6

0.94Emoji0.00

0.63Headings0.16

0.05Transitions0.03

Based on 15 + 16 text responses

Research

What we learned reading every model

ChatGPT-4o (March 2025) and GPT-5 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 Claude Opus 4New provider