What is the difference between Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max?

Gemini 2.5 Pro Preview 06-05 is developed by Google AI while GPT-5.1 Codex Max is developed by OpenAI. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Pro Preview 06-05 or GPT-5.1 Codex Max?

It depends on your use case. Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How can I compare Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max 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 Preview 06-05 and GPT-5.1 Codex Max?

Gemini 2.5 Pro Preview 06-05 is developed by Google AI while GPT-5.1 Codex Max is developed by OpenAI. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.5 Pro Preview 06-05 or GPT-5.1 Codex Max?

It depends on your use case. Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How can I compare Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max 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 Preview 06-05 vs GPT-5.1 Codex Max: Which Is Better?

Updated Dec 2025

Our Verdict

Gemini 2.5 Pro Preview 06-05

GPT-5.1 Codex Max

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 2.5 Pro Preview 06-05

Input

$1.25

Output

$10.00

GPT-5.1 Codex Max

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

47%

Gemini 2.5 Pro Preview 06-05 uses 7.9x more headings

Gemini 2.5 Pro Preview 06-05

GPT-5.1 Codex Max

51%Vocabulary60%

15wSentence Length16w

0.31Hedging0.36

4.8Bold2.3

4.1Lists4.2

0.00Emoji0.00

0.98Headings0.12

0.05Transitions0.03

Based on 20 + 13 text responses

Research

What we learned reading every model

Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max 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 Max vs MiniMax M3New provider

GPT-5.1 Codex Max vs Claude Opus 4New provider

Gemini 2.5 Pro Preview 06-05 vs Grok 3New provider

Updated Dec 2025

Our Verdict

Gemini 2.5 Pro Preview 06-05

GPT-5.1 Codex Max

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 2.5 Pro Preview 06-05

Input

$1.25

Output

$10.00

GPT-5.1 Codex Max

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

47%

Gemini 2.5 Pro Preview 06-05 uses 7.9x more headings

Gemini 2.5 Pro Preview 06-05

GPT-5.1 Codex Max

51%Vocabulary60%

15wSentence Length16w

0.31Hedging0.36

4.8Bold2.3

4.1Lists4.2

0.00Emoji0.00

0.98Headings0.12

0.05Transitions0.03

Based on 20 + 13 text responses

Research

What we learned reading every model

Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max 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 Max vs MiniMax M3New provider

GPT-5.1 Codex Max vs Claude Opus 4New provider

Gemini 2.5 Pro Preview 06-05 vs Grok 3New provider