What is the difference between Claude Fable 5 and Grok 3 Beta?

Claude Fable 5 is developed by Anthropic while Grok 3 Beta is developed by xAI. Claude Fable 5 has a 1.0M token context window vs Grok 3 Beta's 131K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Fable 5 or Grok 3 Beta?

It depends on your use case. Claude Fable 5 and Grok 3 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 Claude Fable 5 cost compared to Grok 3 Beta?

Claude Fable 5 costs $10/M input tokens and Grok 3 Beta costs $2/M input tokens. Grok 3 Beta is $8.00/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 Claude Fable 5 and Grok 3 Beta on Rival?

This page shows a side-by-side comparison of Claude Fable 5 and Grok 3 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 Claude Fable 5 and Grok 3 Beta?

Claude Fable 5 is developed by Anthropic while Grok 3 Beta is developed by xAI. Claude Fable 5 has a 1.0M token context window vs Grok 3 Beta's 131K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Fable 5 or Grok 3 Beta?

It depends on your use case. Claude Fable 5 and Grok 3 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 Claude Fable 5 cost compared to Grok 3 Beta?

Claude Fable 5 costs $10/M input tokens and Grok 3 Beta costs $2/M input tokens. Grok 3 Beta is $8.00/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 Claude Fable 5 and Grok 3 Beta on Rival?

This page shows a side-by-side comparison of Claude Fable 5 and Grok 3 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.

Claude Fable 5 vs Grok 3 Beta: Which Is Better?

Updated Jun 2026

Our Verdict

Claude Fable 5

Grok 3 BetaRunner-up

No community votes yet. On paper, Claude Fable 5 has the edge — newer, bigger context window.

Grok 3 Beta is 13x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Fable 5

Input

$10.00

Output

$50.00

Grok 3 Beta

Input

$2.00

5.0× cheaper

Output

$4.00

13× cheaper

Grok 3 Beta is cheaper on both — 5.0× input, 13× output

Writing DNA

Style Comparison

Similarity

20%

Claude Fable 5 uses 58.2x more emoji

Claude Fable 5

Grok 3 Beta

60%Vocabulary48%

22wSentence Length19w

0.49Hedging0.67

4.0Bold3.1

3.5Lists5.5

0.58Emoji0.00

1.09Headings0.52

0.05Transitions0.28

Based on 27 + 23 text responses

Research

What we learned reading every model

Claude Fable 5 and Grok 3 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 4.1Cross-provider

Updated Jun 2026

Our Verdict

Claude Fable 5

Grok 3 BetaRunner-up

No community votes yet. On paper, Claude Fable 5 has the edge — newer, bigger context window.

Grok 3 Beta is 13x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Fable 5

Input

$10.00

Output

$50.00

Grok 3 Beta

Input

$2.00

5.0× cheaper

Output

$4.00

13× cheaper

Grok 3 Beta is cheaper on both — 5.0× input, 13× output

Writing DNA

Style Comparison

Similarity

20%

Claude Fable 5 uses 58.2x more emoji

Claude Fable 5

Grok 3 Beta

60%Vocabulary48%

22wSentence Length19w

0.49Hedging0.67

4.0Bold3.1

3.5Lists5.5

0.58Emoji0.00

1.09Headings0.52

0.05Transitions0.28

Based on 27 + 23 text responses

Research

What we learned reading every model

Claude Fable 5 and Grok 3 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 4.1Cross-provider