What is the difference between Gemini 3 Pro Preview and GPT-5.1-Codex-Mini?

Gemini 3 Pro Preview is developed by Google AI while GPT-5.1-Codex-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 GPT-5.1-Codex-Mini?

It depends on your use case. Gemini 3 Pro Preview and GPT-5.1-Codex-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 GPT-5.1-Codex-Mini on Rival?

This page shows a side-by-side comparison of Gemini 3 Pro Preview and GPT-5.1-Codex-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 GPT-5.1-Codex-Mini?

Gemini 3 Pro Preview is developed by Google AI while GPT-5.1-Codex-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 GPT-5.1-Codex-Mini?

It depends on your use case. Gemini 3 Pro Preview and GPT-5.1-Codex-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 GPT-5.1-Codex-Mini on Rival?

This page shows a side-by-side comparison of Gemini 3 Pro Preview and GPT-5.1-Codex-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 GPT-5.1-Codex-Mini: Which Is Better?

Updated Nov 2025

Our Verdict

Gemini 3 Pro Preview

GPT-5.1-Codex-Mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

API pricing

Cost per 1M tokens

Gemini 3 Pro Preview

Input

—

Output

—

GPT-5.1-Codex-Mini

Input

$1.50

Output

$6.00

Writing DNA

Style Comparison

Similarity

34%

Gemini 3 Pro Preview uses 11.6x more headings

Gemini 3 Pro Preview

GPT-5.1-Codex-Mini

58%Vocabulary65%

17wSentence Length20w

0.37Hedging0.56

7.7Bold3.3

4.8Lists3.4

0.00Emoji0.00

0.90Headings0.08

0.25Transitions0.05

Based on 23 + 13 text responses

Research

What we learned reading every model

Gemini 3 Pro Preview and GPT-5.1-Codex-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

GPT-5.1-Codex-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

GPT-5.1-Codex-Mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

API pricing

Cost per 1M tokens

Gemini 3 Pro Preview

Input

—

Output

—

GPT-5.1-Codex-Mini

Input

$1.50

Output

$6.00

Writing DNA

Style Comparison

Similarity

34%

Gemini 3 Pro Preview uses 11.6x more headings

Gemini 3 Pro Preview

GPT-5.1-Codex-Mini

58%Vocabulary65%

17wSentence Length20w

0.37Hedging0.56

7.7Bold3.3

4.8Lists3.4

0.00Emoji0.00

0.90Headings0.08

0.25Transitions0.05

Based on 23 + 13 text responses

Research

What we learned reading every model

Gemini 3 Pro Preview and GPT-5.1-Codex-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

GPT-5.1-Codex-Mini vs MiniMax M3New provider

Gemini 3 Pro Preview vs Grok 3New provider

Gemini 3 Pro Preview vs Llama 4 MaverickNew provider