What is the difference between Grok 4 and Kimi K3?

Grok 4 is developed by xAI while Kimi K3 is developed by Moonshot AI. Grok 4 has a 256K token context window vs Kimi K3's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Grok 4 or Kimi K3?

It depends on your use case. Grok 4 and Kimi K3 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 Grok 4 cost compared to Kimi K3?

Grok 4 costs $3/M input tokens and Kimi K3 costs $3/M input tokens. Kimi K3 is $0.00/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 Grok 4 and Kimi K3 on Rival?

This page shows a side-by-side comparison of Grok 4 and Kimi K3 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 Grok 4 and Kimi K3?

Grok 4 is developed by xAI while Kimi K3 is developed by Moonshot AI. Grok 4 has a 256K token context window vs Kimi K3's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Grok 4 or Kimi K3?

It depends on your use case. Grok 4 and Kimi K3 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 Grok 4 cost compared to Kimi K3?

Grok 4 costs $3/M input tokens and Kimi K3 costs $3/M input tokens. Kimi K3 is $0.00/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 Grok 4 and Kimi K3 on Rival?

This page shows a side-by-side comparison of Grok 4 and Kimi K3 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.

Grok 4 vs Kimi K3: Which Is Better?

Updated Jul 2026

Our Verdict

Kimi K3

Grok 4Runner-up

No community votes yet. On paper, Kimi K3 has the edge — bigger model tier, newer, bigger context window.

Too close to call

What do Grok 4 and Kimi K3 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Grok 4

Input

$3.00

Output

$15.00

Kimi K3

Input

$3.00

Output

$15.00

Writing DNA

Style Comparison

Similarity

46%

Kimi K3 uses 11.1x more emoji

Grok 4

Kimi K3

53%Vocabulary58%

18wSentence Length21w

0.67Hedging0.46

2.7Bold3.6

2.7Lists3.4

0.07Emoji0.78

0.86Headings0.89

0.04Transitions0.17

Based on 21 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 4 vs Ox AlphaNew provider

Grok 4 vs MiniMax M3New provider

Grok 4 vs GPT-5New provider

Updated Jul 2026

Our Verdict

Kimi K3

Grok 4Runner-up

No community votes yet. On paper, Kimi K3 has the edge — bigger model tier, newer, bigger context window.

Too close to call

What do Grok 4 and Kimi K3 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Grok 4

Input

$3.00

Output

$15.00

Kimi K3

Input

$3.00

Output

$15.00

Writing DNA

Style Comparison

Similarity

46%

Kimi K3 uses 11.1x more emoji

Grok 4

Kimi K3

53%Vocabulary58%

18wSentence Length21w

0.67Hedging0.46

2.7Bold3.6

2.7Lists3.4

0.07Emoji0.78

0.86Headings0.89

0.04Transitions0.17

Based on 21 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 4 vs Ox AlphaNew provider

Grok 4 vs MiniMax M3New provider

Grok 4 vs GPT-5New provider