What is the difference between Mistral Devstral Medium and GPT-5 Codex?

Mistral Devstral Medium is developed by Mistral AI while GPT-5 Codex is developed by OpenAI. You can compare their actual outputs across 50 challenges on Rival to see how they differ in practice.

Which is better, Mistral Devstral Medium or GPT-5 Codex?

It depends on your use case. Mistral Devstral Medium and GPT-5 Codex each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 50 challenges so you can judge which fits your needs best.

How can I compare Mistral Devstral Medium and GPT-5 Codex on Rival?

This page shows a side-by-side comparison of Mistral Devstral Medium and GPT-5 Codex 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 Mistral Devstral Medium and GPT-5 Codex?

Mistral Devstral Medium is developed by Mistral AI while GPT-5 Codex is developed by OpenAI. You can compare their actual outputs across 50 challenges on Rival to see how they differ in practice.

Which is better, Mistral Devstral Medium or GPT-5 Codex?

It depends on your use case. Mistral Devstral Medium and GPT-5 Codex each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 50 challenges so you can judge which fits your needs best.

How can I compare Mistral Devstral Medium and GPT-5 Codex on Rival?

This page shows a side-by-side comparison of Mistral Devstral Medium and GPT-5 Codex 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.

Mistral Devstral Medium vs GPT-5 Codex: Which Is Better?

Updated Sep 2025

Our Verdict

GPT-5 Codex

Mistral Devstral MediumRunner-up

No community votes yet. On paper, GPT-5 Codex has the edge — bigger model tier, newer, major provider backing.

Slight edge

API pricing

Cost per 1M tokens

Mistral Devstral Medium

Input

$0.40

Output

$2.00

GPT-5 Codex

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

36%

GPT-5 Codex uses 14.6x more emoji

Mistral Devstral Medium

GPT-5 Codex

50%Vocabulary64%

17wSentence Length17w

0.56Hedging0.38

4.5Bold2.3

5.3Lists3.5

0.00Emoji0.15

0.19Headings0.49

0.32Transitions0.05

Based on 21 + 13 text responses

Research

What we learned reading every model

Mistral Devstral Medium and GPT-5 Codex 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 Devstral Medium vs MiniMax M3New provider

Mistral Devstral Medium vs Grok 3New provider

Mistral Devstral Medium vs Llama 4 MaverickNew provider

Updated Sep 2025

Our Verdict

GPT-5 Codex

Mistral Devstral MediumRunner-up

No community votes yet. On paper, GPT-5 Codex has the edge — bigger model tier, newer, major provider backing.

Slight edge

API pricing

Cost per 1M tokens

Mistral Devstral Medium

Input

$0.40

Output

$2.00

GPT-5 Codex

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

36%

GPT-5 Codex uses 14.6x more emoji

Mistral Devstral Medium

GPT-5 Codex

50%Vocabulary64%

17wSentence Length17w

0.56Hedging0.38

4.5Bold2.3

5.3Lists3.5

0.00Emoji0.15

0.19Headings0.49

0.32Transitions0.05

Based on 21 + 13 text responses

Research

What we learned reading every model

Mistral Devstral Medium and GPT-5 Codex 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 Devstral Medium vs MiniMax M3New provider

Mistral Devstral Medium vs Grok 3New provider

Mistral Devstral Medium vs Llama 4 MaverickNew provider