What is the difference between Claude Opus 5 and Meta: Muse Spark 1.1?

Claude Opus 5 is developed by Anthropic while Meta: Muse Spark 1.1 is developed by Meta AI. Claude Opus 5 has a 1.0M token context window vs Meta: Muse Spark 1.1's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 5 or Meta: Muse Spark 1.1?

It depends on your use case. Claude Opus 5 and Meta: Muse Spark 1.1 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 much does Claude Opus 5 cost compared to Meta: Muse Spark 1.1?

Claude Opus 5 costs $5/M input tokens and Meta: Muse Spark 1.1 costs $1.25/M input tokens. Meta: Muse Spark 1.1 is $3.75/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 5 and Meta: Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of Claude Opus 5 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 5 and Meta: Muse Spark 1.1?

Claude Opus 5 is developed by Anthropic while Meta: Muse Spark 1.1 is developed by Meta AI. Claude Opus 5 has a 1.0M token context window vs Meta: Muse Spark 1.1's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 5 or Meta: Muse Spark 1.1?

It depends on your use case. Claude Opus 5 and Meta: Muse Spark 1.1 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 much does Claude Opus 5 cost compared to Meta: Muse Spark 1.1?

Claude Opus 5 costs $5/M input tokens and Meta: Muse Spark 1.1 costs $1.25/M input tokens. Meta: Muse Spark 1.1 is $3.75/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 5 and Meta: Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of Claude Opus 5 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 5 vs Meta: Muse Spark 1.1: Which Is Better?

Updated Jul 2026

Our Verdict

Claude Opus 5

Meta: Muse Spark 1.1Runner-up

No community votes yet. On paper, Claude Opus 5 has the edge — bigger model tier.

Meta: Muse Spark 1.1 is 5.9x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 5

Input

$5.00

Output

$25.00

Meta: Muse Spark 1.1

Input

$1.25

4.0× cheaper

Output

$4.25

5.9× cheaper

Meta: Muse Spark 1.1 is cheaper on both — 4.0× input, 5.9× output

Writing DNA

Style Comparison

Similarity

72%

Claude Opus 5 uses 4.1x more hedging

Claude Opus 5

Meta: Muse Spark 1.1

54%Vocabulary61%

21wSentence Length20w

0.40Hedging0.10

3.9Bold3.7

1.9Lists2.0

0.02Emoji0.01

0.71Headings0.52

0.05Transitions0.02

Based on 27 + 29 text responses

Research

What we learned reading every model

Claude Opus 5 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

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Claude Opus 5 vs MiniMax M3New provider

Claude Opus 5 vs GPT-5New provider

Claude Opus 5 vs Gemini 3.6 FlashNew provider

Updated Jul 2026

Our Verdict

Claude Opus 5

Meta: Muse Spark 1.1Runner-up

No community votes yet. On paper, Claude Opus 5 has the edge — bigger model tier.

Meta: Muse Spark 1.1 is 5.9x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 5

Input

$5.00

Output

$25.00

Meta: Muse Spark 1.1

Input

$1.25

4.0× cheaper

Output

$4.25

5.9× cheaper

Meta: Muse Spark 1.1 is cheaper on both — 4.0× input, 5.9× output

Writing DNA

Style Comparison

Similarity

72%

Claude Opus 5 uses 4.1x more hedging

Claude Opus 5

Meta: Muse Spark 1.1

54%Vocabulary61%

21wSentence Length20w

0.40Hedging0.10

3.9Bold3.7

1.9Lists2.0

0.02Emoji0.01

0.71Headings0.52

0.05Transitions0.02

Based on 27 + 29 text responses

Research

What we learned reading every model

Claude Opus 5 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 5 vs MiniMax M3New provider

Claude Opus 5 vs GPT-5New provider

Claude Opus 5 vs Gemini 3.6 FlashNew provider