What is the difference between Gemma 3 12B and GPT-5.1 Codex Max?

Gemma 3 12B is developed by Google AI while GPT-5.1 Codex Max is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Gemma 3 12B or GPT-5.1 Codex Max?

It depends on your use case. Gemma 3 12B and GPT-5.1 Codex Max each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How can I compare Gemma 3 12B and GPT-5.1 Codex Max on Rival?

This page shows a side-by-side comparison of Gemma 3 12B 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 Gemma 3 12B and GPT-5.1 Codex Max?

Gemma 3 12B is developed by Google AI while GPT-5.1 Codex Max is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Gemma 3 12B or GPT-5.1 Codex Max?

It depends on your use case. Gemma 3 12B and GPT-5.1 Codex Max each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How can I compare Gemma 3 12B and GPT-5.1 Codex Max on Rival?

This page shows a side-by-side comparison of Gemma 3 12B 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.

Gemma 3 12B vs GPT-5.1 Codex Max: Which Is Better?

Updated Dec 2025

Our Verdict

GPT-5.1 Codex Max

Gemma 3 12BRunner-up

No community votes yet. On paper, GPT-5.1 Codex Max has the edge — bigger model tier, newer.

Too close to call

What do Gemma 3 12B and GPT-5.1 Codex Max say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Gemma 3 12B

Input

$0.03

Output

$0.03

GPT-5.1 Codex Max

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

50%

Gemma 3 12B uses 8.9x more transitions

Gemma 3 12B

GPT-5.1 Codex Max

52%Vocabulary60%

17wSentence Length16w

0.66Hedging0.36

6.2Bold2.3

5.4Lists4.2

0.00Emoji0.00

0.06Headings0.12

0.23Transitions0.03

Based on 23 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Gemma 3 12B vs MiniMax M3New provider

Gemma 3 12B vs Ox AlphaNew provider

Gemma 3 12B vs Grok 3New provider

Updated Dec 2025

Our Verdict

GPT-5.1 Codex Max

Gemma 3 12BRunner-up

No community votes yet. On paper, GPT-5.1 Codex Max has the edge — bigger model tier, newer.

Too close to call

What do Gemma 3 12B and GPT-5.1 Codex Max say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Gemma 3 12B

Input

$0.03

Output

$0.03

GPT-5.1 Codex Max

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

50%

Gemma 3 12B uses 8.9x more transitions

Gemma 3 12B

GPT-5.1 Codex Max

52%Vocabulary60%

17wSentence Length16w

0.66Hedging0.36

6.2Bold2.3

5.4Lists4.2

0.00Emoji0.00

0.06Headings0.12

0.23Transitions0.03

Based on 23 + 13 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Gemma 3 12B vs MiniMax M3New provider

Gemma 3 12B vs Ox AlphaNew provider

Gemma 3 12B vs Grok 3New provider