What is the difference between GPT-5.6 Terra and Muse Spark 1.1?

GPT-5.6 Terra is developed by OpenAI while Muse Spark 1.1 is developed by Meta AI. GPT-5.6 Terra has a 1.1M token context window vs 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, GPT-5.6 Terra or Muse Spark 1.1?

It depends on your use case. GPT-5.6 Terra and 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 GPT-5.6 Terra cost compared to Muse Spark 1.1?

GPT-5.6 Terra costs $2.5/M input tokens and Muse Spark 1.1 costs $1.25/M input tokens. Muse Spark 1.1 is $1.25/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-5.6 Terra and Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of GPT-5.6 Terra and 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-5.6 Terra and Muse Spark 1.1?

GPT-5.6 Terra is developed by OpenAI while Muse Spark 1.1 is developed by Meta AI. GPT-5.6 Terra has a 1.1M token context window vs 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, GPT-5.6 Terra or Muse Spark 1.1?

It depends on your use case. GPT-5.6 Terra and 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 GPT-5.6 Terra cost compared to Muse Spark 1.1?

GPT-5.6 Terra costs $2.5/M input tokens and Muse Spark 1.1 costs $1.25/M input tokens. Muse Spark 1.1 is $1.25/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-5.6 Terra and Muse Spark 1.1 on Rival?

This page shows a side-by-side comparison of GPT-5.6 Terra and 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-5.6 Terra vs Muse Spark 1.1: Which Is Better?

Updated Jul 2026

Our Verdict

GPT-5.6 Terra

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.

Muse Spark 1.1 is 3.5x cheaper per token — worth considering if cost matters.

Too close to call

What do GPT-5.6 Terra and Muse Spark 1.1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.6 Terra

Input

$2.50

Output

$15.00

Muse Spark 1.1

Input

$1.25

2.0× cheaper

Output

$4.25

3.5× cheaper

Muse Spark 1.1 is cheaper on both — 2.0× input, 3.5× output

Writing DNA

Style Comparison

Similarity

42%

GPT-5.6 Terra

Muse Spark 1.1

57%Vocabulary61%

18wSentence Length20w

0.85Hedging0.10

2.8Bold3.7

4.6Lists2.0

0.00Emoji0.01

1.12Headings0.52

0.06Transitions0.02

Based on 27 + 29 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.6 Terra vs Ox AlphaNew provider

GPT-5.6 Terra vs MiniMax M3New provider

GPT-5.6 Terra vs Gemini 3.6 FlashNew provider

Updated Jul 2026

Our Verdict

GPT-5.6 Terra

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.

Muse Spark 1.1 is 3.5x cheaper per token — worth considering if cost matters.

Too close to call

What do GPT-5.6 Terra and Muse Spark 1.1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.6 Terra

Input

$2.50

Output

$15.00

Muse Spark 1.1

Input

$1.25

2.0× cheaper

Output

$4.25

3.5× cheaper

Muse Spark 1.1 is cheaper on both — 2.0× input, 3.5× output

Writing DNA

Style Comparison

Similarity

42%

GPT-5.6 Terra

Muse Spark 1.1

57%Vocabulary61%

18wSentence Length20w

0.85Hedging0.10

2.8Bold3.7

4.6Lists2.0

0.00Emoji0.01

1.12Headings0.52

0.06Transitions0.02

Based on 27 + 29 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.6 Terra vs Ox AlphaNew provider

GPT-5.6 Terra vs MiniMax M3New provider

GPT-5.6 Terra vs Gemini 3.6 FlashNew provider