What is the difference between Gemini 3 Pro Preview and OpenAI o4-mini?

Gemini 3 Pro Preview is developed by Google AI while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 51 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3 Pro Preview or OpenAI o4-mini?

It depends on your use case. Gemini 3 Pro Preview and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

How can I compare Gemini 3 Pro Preview and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of Gemini 3 Pro Preview and OpenAI o4-mini 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 3 Pro Preview and OpenAI o4-mini?

Gemini 3 Pro Preview is developed by Google AI while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 51 challenges on Rival to see how they differ in practice.

Which is better, Gemini 3 Pro Preview or OpenAI o4-mini?

It depends on your use case. Gemini 3 Pro Preview and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

How can I compare Gemini 3 Pro Preview and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of Gemini 3 Pro Preview and OpenAI o4-mini 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 3 Pro Preview vs OpenAI o4-mini: Which Is Better?

Updated Nov 2025

Our Verdict

Gemini 3 Pro Preview

OpenAI o4-miniRunner-up

No community votes yet. On paper, Gemini 3 Pro Preview has the edge — bigger model tier, newer.

Too close to call

API pricing

Cost per 1M tokens

Gemini 3 Pro Preview

Input

—

Output

—

OpenAI o4-mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

42%

Gemini 3 Pro Preview uses 768.4x more bold

Gemini 3 Pro Preview

OpenAI o4-mini

58%Vocabulary73%

17wSentence Length15w

0.37Hedging0.18

7.7Bold0.0

4.8Lists2.1

0.00Emoji0.00

0.90Headings0.00

0.25Transitions0.02

Based on 23 + 10 text responses

Research

What we learned reading every model

Gemini 3 Pro Preview and OpenAI o4-mini 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

OpenAI o4-mini vs MiniMax M3New provider

Gemini 3 Pro Preview vs Grok 3New provider

Gemini 3 Pro Preview vs Llama 4 MaverickNew provider

Updated Nov 2025

Our Verdict

Gemini 3 Pro Preview

OpenAI o4-miniRunner-up

No community votes yet. On paper, Gemini 3 Pro Preview has the edge — bigger model tier, newer.

Too close to call

API pricing

Cost per 1M tokens

Gemini 3 Pro Preview

Input

—

Output

—

OpenAI o4-mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

42%

Gemini 3 Pro Preview uses 768.4x more bold

Gemini 3 Pro Preview

OpenAI o4-mini

58%Vocabulary73%

17wSentence Length15w

0.37Hedging0.18

7.7Bold0.0

4.8Lists2.1

0.00Emoji0.00

0.90Headings0.00

0.25Transitions0.02

Based on 23 + 10 text responses

Research

What we learned reading every model

Gemini 3 Pro Preview and OpenAI o4-mini 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

OpenAI o4-mini vs MiniMax M3New provider

Gemini 3 Pro Preview vs Grok 3New provider

Gemini 3 Pro Preview vs Llama 4 MaverickNew provider