What is the difference between Claude Opus 4.6 and Kimi K2?

Claude Opus 4.6 is developed by Anthropic while Kimi K2 is developed by Moonshot AI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.6 or Kimi K2?

It depends on your use case. Claude Opus 4.6 and Kimi K2 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 Claude Opus 4.6 cost compared to Kimi K2?

Claude Opus 4.6 costs $5/M input tokens and Kimi K2 costs $0.57/M input tokens. Kimi K2 is $4.43/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 Opus 4.6 and Kimi K2 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 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 Feb 2026

Claude Opus 4.6vsKimi K2

Kimi K2 is cheaper than Claude Opus 4.6 at $0.57/M vs $5/M input tokens.

Claude Opus 4.6 and Kimi K2 compared across 53 shared prompts
Spec	Claude Opus 4.6	Kimi K2
Input price	$5/M tokens	$0.57/M tokens
Output price	$25/M tokens	$2.3/M tokens
Context window	1.0M tokens	—
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Feb 2026	Jul 2025
SWE-bench Verified	80.8%	65.8%