What is the difference between GPT-4.1 and Meta: Muse Spark 1.1?

GPT-4.1 is developed by OpenAI while Meta: Muse Spark 1.1 is developed by Meta AI. GPT-4.1 has a 1.0M 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, GPT-4.1 or Meta: Muse Spark 1.1?

It depends on your use case. GPT-4.1 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 GPT-4.1 cost compared to Meta: Muse Spark 1.1?

GPT-4.1 costs $2/M input tokens and Meta: Muse Spark 1.1 costs $1.25/M input tokens. Meta: Muse Spark 1.1 is $0.75/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 GPT-4.1 and Meta: Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of GPT-4.1 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 GPT-4.1 and Meta: Muse Spark 1.1?

GPT-4.1 is developed by OpenAI while Meta: Muse Spark 1.1 is developed by Meta AI. GPT-4.1 has a 1.0M 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, GPT-4.1 or Meta: Muse Spark 1.1?

It depends on your use case. GPT-4.1 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 GPT-4.1 cost compared to Meta: Muse Spark 1.1?

GPT-4.1 costs $2/M input tokens and Meta: Muse Spark 1.1 costs $1.25/M input tokens. Meta: Muse Spark 1.1 is $0.75/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 GPT-4.1 and Meta: Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of GPT-4.1 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.

GPT-4.1 vs Meta: Muse Spark 1.1: Which Is Better?

Updated Jul 2026

Our Verdict

GPT-4.1

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.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.1

Input

$2.00

Output

$8.00

Meta: Muse Spark 1.1

Input

$1.25

1.6× cheaper

Output

$4.25

1.9× cheaper

Meta: Muse Spark 1.1 is cheaper on both — 1.6× input, 1.9× output

Writing DNA

Style Comparison

Similarity

46%

GPT-4.1 uses 23.7x more emoji

GPT-4.1

Meta: Muse Spark 1.1

58%Vocabulary61%

19wSentence Length20w

0.38Hedging0.10

9.0Bold3.7

6.1Lists2.0

0.24Emoji0.01

1.01Headings0.52

0.07Transitions0.02

Based on 25 + 29 text responses

Research

What we learned reading every model

GPT-4.1 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

Meta: Muse Spark 1.1 vs GPT-5Cross-provider

GPT-4.1 vs MiniMax M3New provider

GPT-4.1 vs Gemini 3.5 FlashNew provider

Updated Jul 2026

Our Verdict

GPT-4.1

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.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.1

Input

$2.00

Output

$8.00

Meta: Muse Spark 1.1

Input

$1.25

1.6× cheaper

Output

$4.25

1.9× cheaper

Meta: Muse Spark 1.1 is cheaper on both — 1.6× input, 1.9× output

Writing DNA

Style Comparison

Similarity

46%

GPT-4.1 uses 23.7x more emoji

GPT-4.1

Meta: Muse Spark 1.1

58%Vocabulary61%

19wSentence Length20w

0.38Hedging0.10

9.0Bold3.7

6.1Lists2.0

0.24Emoji0.01

1.01Headings0.52

0.07Transitions0.02

Based on 25 + 29 text responses

Research

What we learned reading every model

GPT-4.1 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

Meta: Muse Spark 1.1 vs GPT-5Cross-provider

GPT-4.1 vs MiniMax M3New provider

GPT-4.1 vs Gemini 3.5 FlashNew provider