What is the difference between GPT-5.1-Codex and Mistral Large 2?

GPT-5.1-Codex is developed by OpenAI while Mistral Large 2 is developed by Mistral AI. GPT-5.1-Codex has a 400K token context window vs Mistral Large 2's 128K. You can compare their actual outputs across 23 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1-Codex or Mistral Large 2?

It depends on your use case. GPT-5.1-Codex and Mistral Large 2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 23 challenges so you can judge which fits your needs best.

How much does GPT-5.1-Codex cost compared to Mistral Large 2?

GPT-5.1-Codex costs $1.25/M input tokens and Mistral Large 2 costs $8/M input tokens. GPT-5.1-Codex is $6.75/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 GPT-5.1-Codex and Mistral Large 2 on Rival?

This page shows a side-by-side comparison of GPT-5.1-Codex and Mistral Large 2 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 GPT-5.1-Codex and Mistral Large 2?

GPT-5.1-Codex is developed by OpenAI while Mistral Large 2 is developed by Mistral AI. GPT-5.1-Codex has a 400K token context window vs Mistral Large 2's 128K. You can compare their actual outputs across 23 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1-Codex or Mistral Large 2?

It depends on your use case. GPT-5.1-Codex and Mistral Large 2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 23 challenges so you can judge which fits your needs best.

How much does GPT-5.1-Codex cost compared to Mistral Large 2?

GPT-5.1-Codex costs $1.25/M input tokens and Mistral Large 2 costs $8/M input tokens. GPT-5.1-Codex is $6.75/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 GPT-5.1-Codex and Mistral Large 2 on Rival?

This page shows a side-by-side comparison of GPT-5.1-Codex and Mistral Large 2 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.

GPT-5.1-Codex vs Mistral Large 2: Which Is Better?

Updated Nov 2025

Our Verdict

GPT-5.1-Codex

Mistral Large 2Runner-up

No community votes yet. On paper, GPT-5.1-Codex has the edge — bigger model tier, newer, bigger context window, major provider backing.

Slight edge

API pricing

Cost per 1M tokens

GPT-5.1-Codex

Input

$1.25

6.4× cheaper

Output

$10.00

2.4× cheaper

Mistral Large 2

Input

$8.00

Output

$24.00

GPT-5.1-Codex is cheaper on both — 6.4× input, 2.4× output

Writing DNA

Style Comparison

Similarity

24%

Mistral Large 2 uses 79.6x more emoji

GPT-5.1-Codex

Mistral Large 2

70%Vocabulary43%

17wSentence Length21w

0.39Hedging0.39

3.4Bold14.4

3.5Lists7.4

0.00Emoji0.80

0.50Headings1.41

0.38Transitions0.01

Based on 14 + 10 text responses

Research

What we learned reading every model

GPT-5.1-Codex and Mistral Large 2 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

Mistral Large 2 vs MiniMax M3New provider

Mistral Large 2 vs Grok 3New provider

Mistral Large 2 vs Llama 4 MaverickNew provider

Updated Nov 2025

Our Verdict

GPT-5.1-Codex

Mistral Large 2Runner-up

No community votes yet. On paper, GPT-5.1-Codex has the edge — bigger model tier, newer, bigger context window, major provider backing.

Slight edge

API pricing

Cost per 1M tokens

GPT-5.1-Codex

Input

$1.25

6.4× cheaper

Output

$10.00

2.4× cheaper

Mistral Large 2

Input

$8.00

Output

$24.00

GPT-5.1-Codex is cheaper on both — 6.4× input, 2.4× output

Writing DNA

Style Comparison

Similarity

24%

Mistral Large 2 uses 79.6x more emoji

GPT-5.1-Codex

Mistral Large 2

70%Vocabulary43%

17wSentence Length21w

0.39Hedging0.39

3.4Bold14.4

3.5Lists7.4

0.00Emoji0.80

0.50Headings1.41

0.38Transitions0.01

Based on 14 + 10 text responses

Research

What we learned reading every model

GPT-5.1-Codex and Mistral Large 2 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

Mistral Large 2 vs MiniMax M3New provider

Mistral Large 2 vs Grok 3New provider

Mistral Large 2 vs Llama 4 MaverickNew provider