What is the difference between Gemini 2.5 Pro (I/O Edition) and o1?

Gemini 2.5 Pro (I/O Edition) is developed by Google AI while o1 is developed by OpenAI. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Pro (I/O Edition) or o1?

It depends on your use case. Gemini 2.5 Pro (I/O Edition) and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 41 challenges so you can judge which fits your needs best.

How much does Gemini 2.5 Pro (I/O Edition) cost compared to o1?

Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens and o1 costs $15/M input tokens. Gemini 2.5 Pro (I/O Edition) is $13.75/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 Gemini 2.5 Pro (I/O Edition) and o1 on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Pro (I/O Edition) and o1 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 Gemini 2.5 Pro (I/O Edition) and o1?

Gemini 2.5 Pro (I/O Edition) is developed by Google AI while o1 is developed by OpenAI. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Pro (I/O Edition) or o1?

It depends on your use case. Gemini 2.5 Pro (I/O Edition) and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 41 challenges so you can judge which fits your needs best.

How much does Gemini 2.5 Pro (I/O Edition) cost compared to o1?

Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens and o1 costs $15/M input tokens. Gemini 2.5 Pro (I/O Edition) is $13.75/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 Gemini 2.5 Pro (I/O Edition) and o1 on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Pro (I/O Edition) and o1 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.

Gemini 2.5 Pro (I/O Edition) vs o1: Which Is Better?

Rival

Updated May 2025

Our Verdict

Gemini 2.5 Pro (I/O Edition)

o1Runner-up

No community votes yet. On paper, Gemini 2.5 Pro (I/O Edition) has the edge — bigger model tier, newer.

Gemini 2.5 Pro (I/O Edition) is 6.0x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Gemini 2.5 Pro (I/O Edition)

Input

$1.25

12× cheaper

Output

$10.00

6.0× cheaper

Input

$15.00

Output

$60.00

Gemini 2.5 Pro (I/O Edition) is cheaper on both — 12× input, 6.0× output

Writing DNA

Style Comparison

Similarity

56%

o1 uses 33.4x more transitions

Gemini 2.5 Pro (I/O Edition)

58%Vocabulary64%

16wSentence Length16w

0.38Hedging0.76

5.8Bold5.0

5.0Lists2.6

0.00Emoji0.00

0.63Headings0.44

0.01Transitions0.40

Based on 16 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

o1 vs MiniMax M3New provider

o1 vs Grok 3New provider

o1 vs Llama 4 MaverickNew provider

Rival

Updated May 2025

Our Verdict

Gemini 2.5 Pro (I/O Edition)

o1Runner-up

No community votes yet. On paper, Gemini 2.5 Pro (I/O Edition) has the edge — bigger model tier, newer.

Gemini 2.5 Pro (I/O Edition) is 6.0x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Gemini 2.5 Pro (I/O Edition)

Input

$1.25

12× cheaper

Output

$10.00

6.0× cheaper

Input

$15.00

Output

$60.00

Gemini 2.5 Pro (I/O Edition) is cheaper on both — 12× input, 6.0× output

Writing DNA

Style Comparison

Similarity

56%

o1 uses 33.4x more transitions

Gemini 2.5 Pro (I/O Edition)

58%Vocabulary64%

16wSentence Length16w

0.38Hedging0.76

5.8Bold5.0

5.0Lists2.6

0.00Emoji0.00

0.63Headings0.44

0.01Transitions0.40

Based on 16 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

o1 vs MiniMax M3New provider

o1 vs Grok 3New provider

o1 vs Llama 4 MaverickNew provider

Rival