What is the difference between Claude 3.7 Sonnet and Kimi K2 0905?

Claude 3.7 Sonnet is developed by Anthropic while Kimi K2 0905 is developed by Moonshot AI. Claude 3.7 Sonnet has a 200K token context window vs Kimi K2 0905's 262K. You can compare their actual outputs across 55 challenges on Rival to see how they differ in practice.

Which is better, Claude 3.7 Sonnet or Kimi K2 0905?

It depends on your use case. Claude 3.7 Sonnet and Kimi K2 0905 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 55 challenges so you can judge which fits your needs best.

How much does Claude 3.7 Sonnet cost compared to Kimi K2 0905?

Claude 3.7 Sonnet costs $3/M input tokens and Kimi K2 0905 costs $0.6/M input tokens. Kimi K2 0905 is $2.40/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 3.7 Sonnet and Kimi K2 0905 on Rival?

This page shows a side-by-side comparison of Claude 3.7 Sonnet and Kimi K2 0905 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 3.7 SonnetvsKimi K2 0905

Kimi K2 0905 is cheaper than Claude 3.7 Sonnet at $0.6/M vs $3/M input tokens.

Claude 3.7 Sonnet and Kimi K2 0905 compared across 55 shared prompts
Spec	Claude 3.7 Sonnet	Kimi K2 0905
Input price	$3/M tokens	$0.6/M tokens
Output price	$15/M tokens	$2.5/M tokens
Context window	200K tokens	262K tokens
Weights	—	Open
Free API (OpenRouter)	No	No
Released	Feb 2025	Sep 2025