What is the difference between Claude 3 Opus and Kimi K2?

Claude 3 Opus is developed by Anthropic while Kimi K2 is developed by Moonshot AI. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Opus or Kimi K2?

It depends on your use case. Claude 3 Opus and Kimi K2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does Claude 3 Opus cost compared to Kimi K2?

Claude 3 Opus costs $15/M input tokens and Kimi K2 costs $0.57/M input tokens. Kimi K2 is $14.43/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 3 Opus and Kimi K2 on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Kimi K2 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 Jul 2025

Claude 3 OpusvsKimi K2

Kimi K2 is cheaper than Claude 3 Opus at $0.57/M vs $15/M input tokens.

Claude 3 Opus and Kimi K2 compared across 12 shared prompts
Spec	Claude 3 Opus	Kimi K2
Input price	$15/M tokens	$0.57/M tokens
Output price	$75/M tokens	$2.3/M tokens
Context window	200K tokens	—
Weights	—	Open
Free API (OpenRouter)	No	No
Released	Mar 2024	Jul 2025