What is the difference between Grok 3 Beta and Grok 4.1 Fast?

Both are developed by xAI but target different use cases. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Beta or Grok 4.1 Fast?

It depends on your use case. Grok 3 Beta and Grok 4.1 Fast 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 can I compare Grok 3 Beta and Grok 4.1 Fast on Rival?

This page shows a side-by-side comparison of Grok 3 Beta and Grok 4.1 Fast 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 3 Beta and Grok 4.1 Fast?

Both are developed by xAI but target different use cases. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Beta or Grok 4.1 Fast?

It depends on your use case. Grok 3 Beta and Grok 4.1 Fast 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 can I compare Grok 3 Beta and Grok 4.1 Fast on Rival?

This page shows a side-by-side comparison of Grok 3 Beta and Grok 4.1 Fast 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 3 Beta vs Grok 4.1 Fast: Which Is Better?

Updated Nov 2025

Our Verdict

Grok 3 Beta

Grok 4.1 Fast

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

Grok 3 Beta

Input

$2.00

Output

$4.00

Grok 4.1 Fast

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

39%

Grok 3 Beta uses 3.9x more hedging

Grok 3 Beta

Grok 4.1 Fast

48%Vocabulary67%

19wSentence Length15w

0.67Hedging0.17

3.1Bold4.7

5.5Lists3.7

0.00Emoji0.00

0.52Headings0.99

0.28Transitions0.14

Based on 23 + 24 text responses

Research

What we learned reading every model

Grok 3 Beta and Grok 4.1 Fast 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

Grok 3 Beta vs MiniMax M3New provider

Grok 3 Beta vs OpenAI o3New provider

Grok 3 Beta vs Llama 4 MaverickNew provider

Updated Nov 2025

Our Verdict

Grok 3 Beta

Grok 4.1 Fast

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

Grok 3 Beta

Input

$2.00

Output

$4.00

Grok 4.1 Fast

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

39%

Grok 3 Beta uses 3.9x more hedging

Grok 3 Beta

Grok 4.1 Fast

48%Vocabulary67%

19wSentence Length15w

0.67Hedging0.17

3.1Bold4.7

5.5Lists3.7

0.00Emoji0.00

0.52Headings0.99

0.28Transitions0.14

Based on 23 + 24 text responses

Research

What we learned reading every model

Grok 3 Beta and Grok 4.1 Fast 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

Grok 3 Beta vs MiniMax M3New provider

Grok 3 Beta vs OpenAI o3New provider

Grok 3 Beta vs Llama 4 MaverickNew provider