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.

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.

Claude 3 Opus vs Kimi K2 Thinking: Which Is Better?

Updated Nov 2025

Our Verdict

Claude 3 Opus

Kimi K2 Thinking

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Kimi K2 Thinking is 30x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude 3 Opus

Input

$15.00

Output

$75.00

Kimi K2 Thinking

Input

$0.60

25× cheaper

Output

$2.50

30× cheaper

Kimi K2 Thinking is cheaper on both — 25× input, 30× output

Writing DNA

Style Comparison

Similarity

31%

Kimi K2 Thinking uses 582.4x more bold

Claude 3 Opus

Kimi K2 Thinking

54%Vocabulary57%

14wSentence Length26w

0.48Hedging0.36

0.0Bold5.8

3.0Lists6.0

0.00Emoji0.00

0.00Headings0.56

0.06Transitions0.06

Based on 3 + 14 text responses

Research

What we learned reading every model

Claude 3 Opus and Kimi K2 Thinking 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 Opus vs MiniMax M3New provider

Claude 3 Opus vs Llama 4 MaverickNew provider

Claude 3 Opus vs GPT-5New provider

Updated Nov 2025

Our Verdict

Claude 3 Opus

Kimi K2 Thinking

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Kimi K2 Thinking is 30x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude 3 Opus

Input

$15.00

Output

$75.00

Kimi K2 Thinking

Input

$0.60

25× cheaper

Output

$2.50

30× cheaper

Kimi K2 Thinking is cheaper on both — 25× input, 30× output

Writing DNA

Style Comparison

Similarity

31%

Kimi K2 Thinking uses 582.4x more bold

Claude 3 Opus

Kimi K2 Thinking

54%Vocabulary57%

14wSentence Length26w

0.48Hedging0.36

0.0Bold5.8

3.0Lists6.0

0.00Emoji0.00

0.00Headings0.56

0.06Transitions0.06

Based on 3 + 14 text responses

Research

What we learned reading every model

Claude 3 Opus and Kimi K2 Thinking 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 Opus vs MiniMax M3New provider

Claude 3 Opus vs Llama 4 MaverickNew provider

Claude 3 Opus vs GPT-5New provider