What is the difference between xAI: Grok 4 Fast (free) and Llama 4 Scout?

xAI: Grok 4 Fast (free) is developed by xAI while Llama 4 Scout is developed by Meta AI. xAI: Grok 4 Fast (free) has a 2.0M token context window vs Llama 4 Scout's 10.0M. 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 Llama 4 Scout?

It depends on your use case. xAI: Grok 4 Fast (free) and Llama 4 Scout 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 Llama 4 Scout?

xAI: Grok 4 Fast (free) costs $0/M input tokens and Llama 4 Scout costs $0.25/M input tokens. xAI: Grok 4 Fast (free) is $0.25/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 Llama 4 Scout on Rival?

This page shows a side-by-side comparison of xAI: Grok 4 Fast (free) and Llama 4 Scout 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 Llama 4 Scout?

xAI: Grok 4 Fast (free) is developed by xAI while Llama 4 Scout is developed by Meta AI. xAI: Grok 4 Fast (free) has a 2.0M token context window vs Llama 4 Scout's 10.0M. 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 Llama 4 Scout?

It depends on your use case. xAI: Grok 4 Fast (free) and Llama 4 Scout 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 Llama 4 Scout?

xAI: Grok 4 Fast (free) costs $0/M input tokens and Llama 4 Scout costs $0.25/M input tokens. xAI: Grok 4 Fast (free) is $0.25/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 Llama 4 Scout on Rival?

This page shows a side-by-side comparison of xAI: Grok 4 Fast (free) and Llama 4 Scout 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 Llama 4 Scout: Which Is Better?

Updated Sep 2025

Our Verdict

xAI: Grok 4 Fast (free)

Llama 4 ScoutRunner-up

No community votes yet. On paper, xAI: Grok 4 Fast (free) has the edge — bigger model tier, newer.

Too close to call

API pricing

Cost per 1M tokens

xAI: Grok 4 Fast (free)

Input

$0.000

Output

$0.000

Llama 4 Scout

Input

$0.25

Output

$0.50

Writing DNA

Style Comparison

Similarity

29%

xAI: Grok 4 Fast (free) uses 6.4x more transitions

xAI: Grok 4 Fast (free)

Llama 4 Scout

65%Vocabulary43%

13wSentence Length42w

0.56Hedging0.81

1.4Bold4.1

2.5Lists7.3

0.00Emoji0.00

1.58Headings0.30

0.28Transitions0.04

Based on 14 + 10 text responses

Research

What we learned reading every model

xAI: Grok 4 Fast (free) and Llama 4 Scout 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 MaverickCross-provider

Updated Sep 2025

Our Verdict

xAI: Grok 4 Fast (free)

Llama 4 ScoutRunner-up

No community votes yet. On paper, xAI: Grok 4 Fast (free) has the edge — bigger model tier, newer.

Too close to call

API pricing

Cost per 1M tokens

xAI: Grok 4 Fast (free)

Input

$0.000

Output

$0.000

Llama 4 Scout

Input

$0.25

Output

$0.50

Writing DNA

Style Comparison

Similarity

29%

xAI: Grok 4 Fast (free) uses 6.4x more transitions

xAI: Grok 4 Fast (free)

Llama 4 Scout

65%Vocabulary43%

13wSentence Length42w

0.56Hedging0.81

1.4Bold4.1

2.5Lists7.3

0.00Emoji0.00

1.58Headings0.30

0.28Transitions0.04

Based on 14 + 10 text responses

Research

What we learned reading every model

xAI: Grok 4 Fast (free) and Llama 4 Scout 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 MaverickCross-provider