What is the difference between GPT-5.1 Chat and Mistral Medium 3?

GPT-5.1 Chat is developed by OpenAI while Mistral Medium 3 is developed by Mistral AI. GPT-5.1 Chat has a 128K token context window vs Mistral Medium 3's 131K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1 Chat or Mistral Medium 3?

It depends on your use case. GPT-5.1 Chat and Mistral Medium 3 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 much does GPT-5.1 Chat cost compared to Mistral Medium 3?

GPT-5.1 Chat costs $1.25/M input tokens and Mistral Medium 3 costs $0.4/M input tokens. Mistral Medium 3 is $0.85/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 Chat and Mistral Medium 3 on Rival?

This page shows a side-by-side comparison of GPT-5.1 Chat and Mistral Medium 3 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

GPT-5.1 ChatvsMistral Medium 3

Mistral Medium 3 is cheaper than GPT-5.1 Chat at $0.4/M vs $1.25/M input tokens.

GPT-5.1 Chat and Mistral Medium 3 compared across 53 shared prompts
Spec	GPT-5.1 Chat	Mistral Medium 3
Input price	$1.25/M tokens	$0.4/M tokens
Output price	$10/M tokens	$2/M tokens
Context window	128K tokens	131K tokens
Free API (OpenRouter)	No	No
Released	Nov 2025	May 2025