What is the difference between Grok 3 Beta and Grok 4.20 Beta?

Both are developed by xAI but target different use cases. Grok 3 Beta has a 131K token context window vs Grok 4.20 Beta's 2.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Beta or Grok 4.20 Beta?

It depends on your use case. Grok 3 Beta and Grok 4.20 Beta 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 3 Beta cost compared to Grok 4.20 Beta?

Grok 3 Beta costs $2/M input tokens and Grok 4.20 Beta costs $2/M input tokens. Grok 4.20 Beta 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 3 Beta and Grok 4.20 Beta on Rival?

This page shows a side-by-side comparison of Grok 3 Beta and Grok 4.20 Beta 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 4.20 Beta?

Both are developed by xAI but target different use cases. Grok 3 Beta has a 131K token context window vs Grok 4.20 Beta's 2.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Beta or Grok 4.20 Beta?

It depends on your use case. Grok 3 Beta and Grok 4.20 Beta 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 3 Beta cost compared to Grok 4.20 Beta?

Grok 3 Beta costs $2/M input tokens and Grok 4.20 Beta costs $2/M input tokens. Grok 4.20 Beta 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 3 Beta and Grok 4.20 Beta on Rival?

This page shows a side-by-side comparison of Grok 3 Beta and Grok 4.20 Beta 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 4.20 Beta: Which Is Better?

Updated Mar 2026

Our Verdict

Grok 4.20 Beta

Grok 3 BetaRunner-up

No community votes yet. On paper, Grok 4.20 Beta has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

Grok 3 Beta

Input

$2.00

Output

$4.00

1.5× cheaper

Grok 4.20 Beta

Input

$2.00

Output

$6.00

Writing DNA

Style Comparison

Similarity

57%

Grok 3 Beta uses 2.1x more transitions

Grok 3 Beta

Grok 4.20 Beta

48%Vocabulary57%

19wSentence Length20w

0.67Hedging0.35

3.1Bold4.2

5.5Lists3.7

0.00Emoji0.00

0.52Headings0.62

0.28Transitions0.14

Based on 23 + 23 text responses

Research

What we learned reading every model

Grok 3 Beta and Grok 4.20 Beta 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 GPT-5New provider

Grok 3 Beta vs Claude Opus 4New provider

Updated Mar 2026

Our Verdict

Grok 4.20 Beta

Grok 3 BetaRunner-up

No community votes yet. On paper, Grok 4.20 Beta has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

Grok 3 Beta

Input

$2.00

Output

$4.00

1.5× cheaper

Grok 4.20 Beta

Input

$2.00

Output

$6.00

Writing DNA

Style Comparison

Similarity

57%

Grok 3 Beta uses 2.1x more transitions

Grok 3 Beta

Grok 4.20 Beta

48%Vocabulary57%

19wSentence Length20w

0.67Hedging0.35

3.1Bold4.2

5.5Lists3.7

0.00Emoji0.00

0.52Headings0.62

0.28Transitions0.14

Based on 23 + 23 text responses

Research

What we learned reading every model

Grok 3 Beta and Grok 4.20 Beta 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 GPT-5New provider

Grok 3 Beta vs Claude Opus 4New provider