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

Claude 3 Opus is developed by Anthropic while Kimi K2 Thinking is developed by Moonshot AI. Claude 3 Opus has a 200K token context window vs Kimi K2 Thinking's 262K. 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 Thinking?

It depends on your use case. Claude 3 Opus and Kimi K2 Thinking 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 Thinking?

Claude 3 Opus costs $15/M input tokens and Kimi K2 Thinking costs $0.6/M input tokens. Kimi K2 Thinking is $14.40/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 Thinking on Rival?

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

Claude 3 OpusvsKimi K2 Thinking

Kimi K2 Thinking is cheaper than Claude 3 Opus at $0.6/M vs $15/M input tokens.

Claude 3 Opus and Kimi K2 Thinking compared across 12 shared prompts
Spec	Claude 3 Opus	Kimi K2 Thinking
Input price	$15/M tokens	$0.6/M tokens
Output price	$75/M tokens	$2.5/M tokens
Context window	200K tokens	262K tokens
Parameters	Not disclosed	1T (32B active)
Weights	—	Open
Free API (OpenRouter)	No	No
Released	Mar 2024	Nov 2025