What is the difference between GPT-5 and o1?

Both are developed by OpenAI but target different use cases. GPT-5 has a 400K token context window vs o1's 128K. in 12 community votes on Rival, GPT-5 wins 56% of head-to-head matchups. These results are based on blind head-to-head voting across 52 challenges.

Which is better, GPT-5 or o1?

Based on 12 community votes on Rival, GPT-5 wins 56% of head-to-head matchups against o1. GPT-5 is strongest in Reasoning.

How much does GPT-5 cost compared to o1?

GPT-5 costs $1.25/M input tokens and o1 costs $15/M input tokens. GPT-5 is $13.75/M cheaper per input. GPT-5 also wins more often in community votes, making it the better value.

How are GPT-5 vs o1 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 12 votes have been collected for this pair across 52 challenges. All vote data is part of Rival's open dataset.

What is the difference between GPT-5 and o1?

Both are developed by OpenAI but target different use cases. GPT-5 has a 400K token context window vs o1's 128K. in 12 community votes on Rival, GPT-5 wins 56% of head-to-head matchups. These results are based on blind head-to-head voting across 52 challenges.

Which is better, GPT-5 or o1?

Based on 12 community votes on Rival, GPT-5 wins 56% of head-to-head matchups against o1. GPT-5 is strongest in Reasoning.

How much does GPT-5 cost compared to o1?

GPT-5 costs $1.25/M input tokens and o1 costs $15/M input tokens. GPT-5 is $13.75/M cheaper per input. GPT-5 also wins more often in community votes, making it the better value.

How are GPT-5 vs o1 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 12 votes have been collected for this pair across 52 challenges. All vote data is part of Rival's open dataset.

GPT-5 vs o1: Which Is Better?

Updated Aug 2025

Our Verdict

GPT-5Winner

o1Runner-up

GPT-5 has the edge overall. In 12 blind votes, GPT-5 wins 56% of the time.

GPT-5 particularly excels in Reasoning. GPT-5 is 6.0x cheaper per token — worth considering if cost matters.

Slight edge

What do GPT-5 and o1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5

Input

$1.25

12× cheaper

Output

$10.00

6.0× cheaper

Input

$15.00

Output

$60.00

GPT-5 is cheaper on both — 12× input, 6.0× output

Writing DNA

Style Comparison

Similarity

58%

o1 uses 26.7x more bold

GPT-5

65%Vocabulary64%

13wSentence Length16w

0.20Hedging0.76

0.2Bold5.0

4.6Lists2.6

0.00Emoji0.00

0.16Headings0.44

0.03Transitions0.40

Based on 16 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

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o1 vs Llama 4 MaverickNew provider

Updated Aug 2025

Our Verdict

GPT-5Winner

o1Runner-up

GPT-5 has the edge overall. In 12 blind votes, GPT-5 wins 56% of the time.

GPT-5 particularly excels in Reasoning. GPT-5 is 6.0x cheaper per token — worth considering if cost matters.

Slight edge

What do GPT-5 and o1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5

Input

$1.25

12× cheaper

Output

$10.00

6.0× cheaper

Input

$15.00

Output

$60.00

GPT-5 is cheaper on both — 12× input, 6.0× output

Writing DNA

Style Comparison

Similarity

58%

o1 uses 26.7x more bold

GPT-5

65%Vocabulary64%

13wSentence Length16w

0.20Hedging0.76

0.2Bold5.0

4.6Lists2.6

0.00Emoji0.00

0.16Headings0.44

0.03Transitions0.40

Based on 16 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

o1 vs Ox AlphaNew provider

o1 vs MiniMax M3New provider

o1 vs Llama 4 MaverickNew provider