What is the difference between Claude Sonnet 4.5 and Mistral Devstral Medium?

Claude Sonnet 4.5 is developed by Anthropic while Mistral Devstral Medium is developed by Mistral AI. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or Mistral Devstral Medium?

It depends on your use case. Claude Sonnet 4.5 and Mistral Devstral Medium each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Mistral Devstral Medium?

Claude Sonnet 4.5 costs $3/M input tokens and Mistral Devstral Medium costs $0.4/M input tokens. Mistral Devstral Medium is $2.60/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 Claude Sonnet 4.5 and Mistral Devstral Medium on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Mistral Devstral Medium 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 Sep 2025

Claude Sonnet 4.5vsMistral Devstral Medium

Mistral Devstral Medium is cheaper than Claude Sonnet 4.5 at $0.4/M vs $3/M input tokens.

Claude Sonnet 4.5 and Mistral Devstral Medium compared across 43 shared prompts
Spec	Claude Sonnet 4.5	Mistral Devstral Medium
Input price	$3/M tokens	$0.4/M tokens
Output price	$15/M tokens	$2/M tokens
Context window	200K tokens	—
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Sep 2025	Jul 2025
SWE-bench Verified	77.2%	61.6%