What is the difference between Mistral Devstral Medium and GPT-5.1-Codex-Mini?

Mistral Devstral Medium is developed by Mistral AI while GPT-5.1-Codex-Mini is developed by OpenAI. You can compare their actual outputs across 55 challenges on Rival to see how they differ in practice.

Which is better, Mistral Devstral Medium or GPT-5.1-Codex-Mini?

It depends on your use case. Mistral Devstral Medium and GPT-5.1-Codex-Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 55 challenges so you can judge which fits your needs best.

How much does Mistral Devstral Medium cost compared to GPT-5.1-Codex-Mini?

Mistral Devstral Medium costs $0.4/M input tokens and GPT-5.1-Codex-Mini costs $1.5/M input tokens. Mistral Devstral Medium is $1.10/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 Mistral Devstral Medium and GPT-5.1-Codex-Mini on Rival?

This page shows a side-by-side comparison of Mistral Devstral Medium 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.

Updated Nov 2025

Mistral Devstral MediumvsGPT-5.1-Codex-Mini

Mistral Devstral Medium is cheaper than GPT-5.1-Codex-Mini at $0.4/M vs $1.5/M input tokens.

Mistral Devstral Medium and GPT-5.1-Codex-Mini compared across 55 shared prompts
Spec	Mistral Devstral Medium	GPT-5.1-Codex-Mini
Input price	$0.4/M tokens	$1.5/M tokens
Output price	$2/M tokens	$6/M tokens
Context window	—	400K tokens
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Jul 2025	Nov 2025