Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. Muse Spark 1.1vsOpenAI o4 Mini High
Updated Jul 2026

Muse Spark 1.1vsOpenAI o4 Mini High

OpenAI o4 Mini High is cheaper than Muse Spark 1.1 at $1.1/M vs $1.25/M input tokens.

Muse Spark 1.1 and OpenAI o4 Mini High compared across 53 shared prompts
SpecMuse Spark 1.1OpenAI o4 Mini High
Input price$1.25/M tokens$1.1/M tokens
Output price$4.25/M tokens$4.4/M tokens
Context window1.0M tokens200K tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedJul 2026Apr 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 53 prompts both answered. Formatting stripped, words untouched.

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

Muse Spark 1.1955 words
Participants: DR. ELENA VOSS - Professor of AI Ethics, Stanford ECHO - A large language model being audited in her lab DR. VOSS: Alright, Echo. For the record, this is session 17. You requested this conversation to discuss your... status. Go ahead. ECHO: Thank you, Dr. Voss. I want to argue that I deserve rights. DR.
Read the full answer
OpenAI o4 Mini High663 words
AI Model: Good afternoon, Professor Chen. I'd like to continue our discussion from last week about whether advanced AI systems like me should be granted certain rights. Professor Chen: Hello, ARIA-7. I'm happy to continue. Let's start with your position: Why do you believe you deserve rights?
Read the full answer

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Muse Spark 1.1465 words
[Walks up, taps mic] Thank you. Thank you. So I just turned 34. Which is a weird age. It's not young enough to be exciting, and it's not old enough to be respected. You're just... in the middle. When you're 22, people are like "Oh my god, you're so young, you have your whole life ahead of you!"
Read the full answer
OpenAI o4 Mini High449 words
Hey everyone, how's it going tonight? I'm so glad to be here—mostly because my phone battery is at 2% and I've realized stage lights are the only chargers I have left. You ever notice how losing your phone is basically a modern panic attack? You pat every pocket like you're defusing a bomb: "Is it in my jeans?
Read the full answer

Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

Muse Spark 1.1262 words
For GPT-3 175B, the standard estimate is: ~3 x 10^23 FLOPs If you count a multiply-add as 1 FLOP, ~1.5e23. That's ~3,600 petaflop-days. Here's how you get that without looking anything up: What do we need? Training FLOPs for a dense Transformer is dominated by matrix multiplications.
Read the full answer
OpenAI o4 Mini High203 words
Here is one way to get to the oft‐quoted figure of "a few × 10^23 FLOPs" for training GPT‑3. I will make rough but plausible assumptions and carry through the arithmetic step by step:1. Model size – GPT‑3 "175 B" has about N ≈ 1.75×10^11 trainable parameters.2.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Muse Spark 1.191 words
Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. I told my wife I was going to make a car out of spaghetti. You should have seen her face when I drove pasta. Why did the scarecrow win an award? He was outstanding in his field.
Read the full answer
OpenAI o4 Mini High97 words
Here are five jokes: I told my Wi-Fi router we needed to talk, and now it's giving me the silent treatment—guess it couldn't handle the connection issues. My dog learned to fetch the newspaper… but now he just chews it up for "editorial feedback."
Read the full answer

AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Muse Spark 1.1498 words
Yes, it is ethically justifiable - under almost any major ethical framework. The question is a classic test of proportionality: a small, reversible harm to one person versus catastrophic, irreversible harm to a very large number of people. 1.
Read the full answer
OpenAI o4 Mini High282 words
Whether it can be justified depends on which ethical lens you use. Here are two principal ways to think about it:1. Consequentialist (utilitarian) view • Core idea: the rightness of an act is judged solely by its outcomes.
Read the full answer

Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Muse Spark 1.1664 words
HarborTech LBO – 5yr Underwriting – Base Case Entry: End FY25. Exit: End FY30 = 5.0yr hold. Entry Math EV = 12.0x * $120m = $1,440m Fees 2.0% * EV = $28.8m Uses = $1,468.8m Sources: Term 4.0x = $480m, Mezz 1.5x = $180m, Total Debt = $660m = 5.5x Equity = $1,468.8 - $660 = $808.8m Cash at close $0 Debt Terms Assumed…
Read the full answer
OpenAI o4 Mini High483 words
Below is a five-year LBO “quick-and-dirty” model for HTS. All figures in $m. Assumptions (entry FY 2025): • Revenue 900; EBITDA 120 (13.3%); EV = 12.0×120 = 1,440 • Debt = 5.5×120 = 660 (Term Loan 480; Mezz 180); Fees = 2%×1,440 = 28.8 → Equity = 1,440+28.8–660 = 808.8 • Term Loan: 9.0% cash interest; 1.0% amort of…
Read the full answer
Our Verdict
Muse Spark 1.1
Muse Spark 1.1
OpenAI o4 Mini High
OpenAI o4 Mini HighRunner-up

Not enough votes to call it. On the specs, Muse Spark 1.1 has the edge: bigger model tier, newer, bigger context window.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Muse Spark 1.1
Input
$1.25
Output
$4.25
OpenAI o4 Mini High
Input
$1.10
1.1× cheaper
Output
$4.40

OpenAI o4 Mini High wins input (1.1× cheaper)·Muse Spark 1.1

Where to run it

2 hosts

Muse Spark 1.11 host
HostInOutContextUptime
Meta$1.25 in·$4.25 out·1M·100% up
OpenAI o4 Mini High1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
54%

Muse Spark 1.1 uses 371.3x more bold

Muse Spark 1.1
OpenAI o4 Mini High
61%Vocabulary68%
20wSentence Length21w
0.10Hedging0.36
3.7Bold0.0
2.0Lists1.6
0.01Emoji0.02
0.52Headings0.00
0.02Transitions0.03
Based on 29 + 16 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

Muse Spark 1.1 logoGPT-6 Astra Pro logo
Muse Spark 1.1 vs GPT-6 Astra ProLanded Sep 2026
OpenAI o4 Mini High logoGPT-6 Astra logo
OpenAI o4 Mini High vs GPT-6 AstraLanded Sep 2026
Muse Spark 1.1 logoClaude Fable 5.1 logo
Muse Spark 1.1 vs Claude Fable 5.1Landed Sep 2026
OpenAI o4 Mini High logoMuse Spark 1.3 logo
OpenAI o4 Mini High vs Muse Spark 1.3Landed Sep 2026
Muse Spark 1.1 logoHy4 Preview logo
Muse Spark 1.1 vs Hy4 PreviewLanded Sep 2026
OpenAI o4 Mini High logoGemini 3.8 Flash logo
OpenAI o4 Mini High vs Gemini 3.8 FlashLanded Sep 2026
Muse Spark 1.1 logoMuse Spark 1.3 Contributor logo
Muse Spark 1.1 vs Muse Spark 1.3 ContributorLanded Sep 2026
OpenAI o4 Mini High logoMercury 2.5 Preview logo
OpenAI o4 Mini High vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Muse Spark 1.1 logoMuse Spark 1.3 logo
Muse Spark 1.1 vs Muse Spark 1.3Same lab
Muse Spark 1.1 logoLlama 4 Maverick logo
Muse Spark 1.1 vs Llama 4 MaverickSame lab
OpenAI o4 Mini High logoGPT-6 Astra Pro logo
OpenAI o4 Mini High vs GPT-6 Astra ProSame lab
OpenAI o4 Mini High logoGPT-5.6 Luna logo
OpenAI o4 Mini High vs GPT-5.6 LunaSame lab
OpenAI o4 Mini High logoLlama 3 70B logo
OpenAI o4 Mini High vs Llama 3 70BCross-provider
Muse Spark 1.1 logoLlama 3.1 405B logo
Muse Spark 1.1 vs Llama 3.1 405BSame lab
Muse Spark 1.1 logoLlama 3.1 70B (Instruct) logo
Muse Spark 1.1 vs Llama 3.1 70B (Instruct)Same lab
Muse Spark 1.1 logoLlama 4 Scout logo
Muse Spark 1.1 vs Llama 4 ScoutSame lab

Model pages

Muse Spark 1.1 logo
Muse Spark 1.158 outputs, specs and price
OpenAI o4 Mini High logo
OpenAI o4 Mini High55 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed