What is the difference between Claude Opus 4 and Meta: Muse Spark 1.1?

Claude Opus 4 is developed by Anthropic while Meta: Muse Spark 1.1 is developed by Meta AI. Claude Opus 4 has a 200K token context window vs Meta: Muse Spark 1.1's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4 or Meta: Muse Spark 1.1?

It depends on your use case. Claude Opus 4 and Meta: Muse Spark 1.1 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 cost compared to Meta: Muse Spark 1.1?

Claude Opus 4 costs $15/M input tokens and Meta: Muse Spark 1.1 costs $1.25/M input tokens. Meta: Muse Spark 1.1 is $13.75/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 and Meta: Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Meta: Muse Spark 1.1 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 and Meta: Muse Spark 1.1?

Claude Opus 4 is developed by Anthropic while Meta: Muse Spark 1.1 is developed by Meta AI. Claude Opus 4 has a 200K token context window vs Meta: Muse Spark 1.1's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4 or Meta: Muse Spark 1.1?

It depends on your use case. Claude Opus 4 and Meta: Muse Spark 1.1 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 cost compared to Meta: Muse Spark 1.1?

Claude Opus 4 costs $15/M input tokens and Meta: Muse Spark 1.1 costs $1.25/M input tokens. Meta: Muse Spark 1.1 is $13.75/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 and Meta: Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Meta: Muse Spark 1.1 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 vs Meta: Muse Spark 1.1: Which Is Better?

Updated Jul 2026

Our Verdict

Claude Opus 4

Meta: Muse Spark 1.1

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Meta: Muse Spark 1.1 is 18x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Meta: Muse Spark 1.1

Input

$1.25

12× cheaper

Output

$4.25

18× cheaper

Meta: Muse Spark 1.1 is cheaper on both — 12× input, 18× output

Writing DNA

Style Comparison

Similarity

49%

Claude Opus 4 uses 11.2x more emoji

Claude Opus 4

Meta: Muse Spark 1.1

64%Vocabulary61%

62wSentence Length20w

0.52Hedging0.10

4.4Bold3.7

9.1Lists2.0

0.11Emoji0.01

1.87Headings0.52

0.27Transitions0.02

Based on 16 + 29 text responses

Research

What we learned reading every model

Claude Opus 4 and Meta: Muse Spark 1.1 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

Claude Opus 4 vs GPT-5New provider

Claude Opus 4 vs MiniMax M3New provider

Claude Opus 4 vs Gemini 3.5 FlashNew provider

Updated Jul 2026

Our Verdict

Claude Opus 4

Meta: Muse Spark 1.1

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Meta: Muse Spark 1.1 is 18x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Meta: Muse Spark 1.1

Input

$1.25

12× cheaper

Output

$4.25

18× cheaper

Meta: Muse Spark 1.1 is cheaper on both — 12× input, 18× output

Writing DNA

Style Comparison

Similarity

49%

Claude Opus 4 uses 11.2x more emoji

Claude Opus 4

Meta: Muse Spark 1.1

64%Vocabulary61%

62wSentence Length20w

0.52Hedging0.10

4.4Bold3.7

9.1Lists2.0

0.11Emoji0.01

1.87Headings0.52

0.27Transitions0.02

Based on 16 + 29 text responses

Research

What we learned reading every model

Claude Opus 4 and Meta: Muse Spark 1.1 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

Claude Opus 4 vs GPT-5New provider

Claude Opus 4 vs MiniMax M3New provider

Claude Opus 4 vs Gemini 3.5 FlashNew provider