What is the difference between Claude Opus 4.6 and Grok 3 Beta?

Claude Opus 4.6 is developed by Anthropic while Grok 3 Beta is developed by xAI. Claude Opus 4.6 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 Opus 4.6 or Grok 3 Beta?

It depends on your use case. Claude Opus 4.6 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 Opus 4.6 cost compared to Grok 3 Beta?

Claude Opus 4.6 costs $5/M input tokens and Grok 3 Beta costs $2/M input tokens. Grok 3 Beta is $3.00/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 Opus 4.6 and Grok 3 Beta on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 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 Opus 4.6 and Grok 3 Beta?

Claude Opus 4.6 is developed by Anthropic while Grok 3 Beta is developed by xAI. Claude Opus 4.6 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 Opus 4.6 or Grok 3 Beta?

It depends on your use case. Claude Opus 4.6 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 Opus 4.6 cost compared to Grok 3 Beta?

Claude Opus 4.6 costs $5/M input tokens and Grok 3 Beta costs $2/M input tokens. Grok 3 Beta is $3.00/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 Opus 4.6 and Grok 3 Beta on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 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 Opus 4.6 vs Grok 3 Beta: Which Is Better?

Updated Feb 2026

Our Verdict

Claude Opus 4.6

Grok 3 BetaRunner-up

No community votes yet. On paper, Claude Opus 4.6 has the edge — newer, bigger context window.

Grok 3 Beta is 6.3x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.6

Input

$5.00

Output

$25.00

Grok 3 Beta

Input

$2.00

2.5× cheaper

Output

$4.00

6.3× cheaper

Grok 3 Beta is cheaper on both — 2.5× input, 6.3× output

Writing DNA

Style Comparison

Similarity

38%

Claude Opus 4.6 uses 20.7x more emoji

Claude Opus 4.6

Grok 3 Beta

53%Vocabulary48%

35wSentence Length19w

0.68Hedging0.67

5.2Bold3.1

2.9Lists5.5

0.21Emoji0.00

1.34Headings0.52

0.03Transitions0.28

Based on 23 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.6 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 OpenAI o3New provider

Grok 3 Beta vs Llama 4 MaverickNew provider

Updated Feb 2026

Our Verdict

Claude Opus 4.6

Grok 3 BetaRunner-up

No community votes yet. On paper, Claude Opus 4.6 has the edge — newer, bigger context window.

Grok 3 Beta is 6.3x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.6

Input

$5.00

Output

$25.00

Grok 3 Beta

Input

$2.00

2.5× cheaper

Output

$4.00

6.3× cheaper

Grok 3 Beta is cheaper on both — 2.5× input, 6.3× output

Writing DNA

Style Comparison

Similarity

38%

Claude Opus 4.6 uses 20.7x more emoji

Claude Opus 4.6

Grok 3 Beta

53%Vocabulary48%

35wSentence Length19w

0.68Hedging0.67

5.2Bold3.1

2.9Lists5.5

0.21Emoji0.00

1.34Headings0.52

0.03Transitions0.28

Based on 23 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.6 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 OpenAI o3New provider

Grok 3 Beta vs Llama 4 MaverickNew provider