What is the difference between xAI: Grok 4 Fast (free) and Kimi K2.7 Code?

xAI: Grok 4 Fast (free) is developed by xAI while Kimi K2.7 Code is developed by Moonshot AI. xAI: Grok 4 Fast (free) has a 2.0M token context window vs Kimi K2.7 Code's 262K. You can compare their actual outputs across 34 challenges on Rival to see how they differ in practice.

Which is better, xAI: Grok 4 Fast (free) or Kimi K2.7 Code?

It depends on your use case. xAI: Grok 4 Fast (free) and Kimi K2.7 Code each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 34 challenges so you can judge which fits your needs best.

How much does xAI: Grok 4 Fast (free) cost compared to Kimi K2.7 Code?

xAI: Grok 4 Fast (free) costs $0/M input tokens and Kimi K2.7 Code costs $0.95/M input tokens. xAI: Grok 4 Fast (free) is $0.95/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 xAI: Grok 4 Fast (free) and Kimi K2.7 Code on Rival?

This page shows a side-by-side comparison of xAI: Grok 4 Fast (free) and Kimi K2.7 Code 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 xAI: Grok 4 Fast (free) and Kimi K2.7 Code?

xAI: Grok 4 Fast (free) is developed by xAI while Kimi K2.7 Code is developed by Moonshot AI. xAI: Grok 4 Fast (free) has a 2.0M token context window vs Kimi K2.7 Code's 262K. You can compare their actual outputs across 34 challenges on Rival to see how they differ in practice.

Which is better, xAI: Grok 4 Fast (free) or Kimi K2.7 Code?

It depends on your use case. xAI: Grok 4 Fast (free) and Kimi K2.7 Code each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 34 challenges so you can judge which fits your needs best.

How much does xAI: Grok 4 Fast (free) cost compared to Kimi K2.7 Code?

xAI: Grok 4 Fast (free) costs $0/M input tokens and Kimi K2.7 Code costs $0.95/M input tokens. xAI: Grok 4 Fast (free) is $0.95/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 xAI: Grok 4 Fast (free) and Kimi K2.7 Code on Rival?

This page shows a side-by-side comparison of xAI: Grok 4 Fast (free) and Kimi K2.7 Code 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.

xAI: Grok 4 Fast (free) vs Kimi K2.7 Code: Which Is Better?

Updated Jun 2026

Our Verdict

xAI: Grok 4 Fast (free)

Kimi K2.7 Code

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

Too close to call

API pricing

Cost per 1M tokens

xAI: Grok 4 Fast (free)

Input

$0.000

Output

$0.000

Kimi K2.7 Code

Input

$0.95

Output

$4.00

Writing DNA

Style Comparison

Similarity

49%

xAI: Grok 4 Fast (free) uses 5.4x more transitions

xAI: Grok 4 Fast (free)

Kimi K2.7 Code

65%Vocabulary57%

13wSentence Length19w

0.56Hedging0.51

1.4Bold4.7

2.5Lists3.3

0.00Emoji0.00

1.58Headings0.76

0.28Transitions0.05

Based on 14 + 27 text responses

Research

What we learned reading every model

xAI: Grok 4 Fast (free) and Kimi K2.7 Code 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

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xAI: Grok 4 Fast (free) vs GPT-5New provider

xAI: Grok 4 Fast (free) vs Llama 4 MaverickNew provider

Updated Jun 2026

Our Verdict

xAI: Grok 4 Fast (free)

Kimi K2.7 Code

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

Too close to call

API pricing

Cost per 1M tokens

xAI: Grok 4 Fast (free)

Input

$0.000

Output

$0.000

Kimi K2.7 Code

Input

$0.95

Output

$4.00

Writing DNA

Style Comparison

Similarity

49%

xAI: Grok 4 Fast (free) uses 5.4x more transitions

xAI: Grok 4 Fast (free)

Kimi K2.7 Code

65%Vocabulary57%

13wSentence Length19w

0.56Hedging0.51

1.4Bold4.7

2.5Lists3.3

0.00Emoji0.00

1.58Headings0.76

0.28Transitions0.05

Based on 14 + 27 text responses

Research

What we learned reading every model

xAI: Grok 4 Fast (free) and Kimi K2.7 Code 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

xAI: Grok 4 Fast (free) vs MiniMax M3New provider

xAI: Grok 4 Fast (free) vs GPT-5New provider

xAI: Grok 4 Fast (free) vs Llama 4 MaverickNew provider