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

Claude 3.7 Thinking Sonnet is developed by Anthropic while Kimi K2 is developed by Moonshot AI. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

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

It depends on your use case. Claude 3.7 Thinking Sonnet and Kimi K2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

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

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Kimi K2 costs $0.57/M input tokens. Kimi K2 is $5.43/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 3.7 Thinking Sonnet and Kimi K2 on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet 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.

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

Claude 3.7 Thinking Sonnet is developed by Anthropic while Kimi K2 is developed by Moonshot AI. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

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

It depends on your use case. Claude 3.7 Thinking Sonnet and Kimi K2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

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

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Kimi K2 costs $0.57/M input tokens. Kimi K2 is $5.43/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 3.7 Thinking Sonnet and Kimi K2 on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet 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.

Claude 3.7 Thinking Sonnet vs Kimi K2: Which Is Better?

Updated Jul 2025

Our Verdict

Kimi K2

Claude 3.7 Thinking SonnetRunner-up

No community votes yet. On paper, Kimi K2 has the edge — bigger model tier, newer.

Kimi K2 is 13x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude 3.7 Thinking Sonnet

Input

$6.00

Output

$30.00

Kimi K2

Input

$0.57

11× cheaper

Output

$2.30

13× cheaper

Kimi K2 is cheaper on both — 11× input, 13× output

Writing DNA

Style Comparison

Similarity

46%

Kimi K2 uses 68.5x more emoji

Claude 3.7 Thinking Sonnet

Kimi K2

61%Vocabulary63%

49wSentence Length19w

0.64Hedging0.35

2.2Bold4.2

4.5Lists3.6

0.00Emoji0.68

1.81Headings0.61

0.21Transitions0.06

Based on 21 + 22 text responses

Research

What we learned reading every model

Claude 3.7 Thinking Sonnet and Kimi K2 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Claude 3.7 Thinking Sonnet vs MiniMax M3New provider

Kimi K2 vs Llama 4 MaverickNew provider

Kimi K2 vs GPT-5New provider

Updated Jul 2025

Our Verdict

Kimi K2

Claude 3.7 Thinking SonnetRunner-up

No community votes yet. On paper, Kimi K2 has the edge — bigger model tier, newer.

Kimi K2 is 13x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude 3.7 Thinking Sonnet

Input

$6.00

Output

$30.00

Kimi K2

Input

$0.57

11× cheaper

Output

$2.30

13× cheaper

Kimi K2 is cheaper on both — 11× input, 13× output

Writing DNA

Style Comparison

Similarity

46%

Kimi K2 uses 68.5x more emoji

Claude 3.7 Thinking Sonnet

Kimi K2

61%Vocabulary63%

49wSentence Length19w

0.64Hedging0.35

2.2Bold4.2

4.5Lists3.6

0.00Emoji0.68

1.81Headings0.61

0.21Transitions0.06

Based on 21 + 22 text responses

Research

What we learned reading every model

Claude 3.7 Thinking Sonnet and Kimi K2 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Claude 3.7 Thinking Sonnet vs MiniMax M3New provider

Kimi K2 vs Llama 4 MaverickNew provider

Kimi K2 vs GPT-5New provider