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  5. Gemini 3 Pro PreviewvsMuse Spark 1.3 Contributor
Updated Sep 2026

Gemini 3 Pro PreviewvsMuse Spark 1.3 Contributor

Muse Spark 1.3 Contributor is the newer model, released after Gemini 3 Pro Preview.

Gemini 3 Pro Preview and Muse Spark 1.3 Contributor compared across 50 shared prompts
SpecGemini 3 Pro PreviewMuse Spark 1.3 Contributor
Input price—$0.1/M tokens
Output price—$0.2/M tokens
Context window—1.0M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedNov 2025Sep 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 50 prompts both answered. Formatting stripped, words untouched.

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Gemini 3 Pro Preview349 words
This represents a high-octane, aggressive protocol designed for an experienced biohacker. It integrates metabolic flexibility, mitochondrial optimization, hormetic stress, and cognitive enhancement. Disclaimer: I am an AI, not a doctor. This plan involves potent supplements, fasting, and intense physical exertion.
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Muse Spark 1.3 Contributor804 words
This is an educational longevity optimization framework, not medical advice. Longevity biohacking is highly individual. Consult your physician, especially before fasting, keto, sauna/cold exposure, HIIT, or any new supplements - particularly if you have cardiovascular disease, diabetes, hypertension, kidney/liver…
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Gemini 3 Pro Preview1,065 words
The Point of Divergence: 1920 To make this scenario plausible, we assume that Julius Lilienfeld’s theoretical patents for the field-effect transistor (FET) were accompanied by a breakthrough in materials science—specifically, the purification of germanium or silicon—allowing practical manufacturing by a major player…
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Muse Spark 1.3 Contributor2,344 words
If the transistor arrives in 1920 instead of 1947, you don't just get the iPhone 27 years early. You change WWII, you change who wins the peace, and you get the Information Age before television has even matured. Here’s the most plausible trace, with the caveat that invention is not production.
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Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

Gemini 3 Pro Preview81 words
TO: Investment Committee FROM: [Analyst Name] DATE: October 26, 2023 SUBJECT: LedgerLift (LLLT) – SHORT Recommendation Recommendation Recommendation: SHORT Price Target: $28 – $32 (30–40% downside) Current Price: $46.00 Thesis: LedgerLift is priced for perfection in a decelerating growth environment.
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Muse Spark 1.3 Contributor701 words
LedgerLift (LLLT) – Short Internal IC Memo Price $46 Mkt Cap $8.74B (190m shares) EV $7.34B (Net Cash $1.4B) FY25 Rev $820m, EBIT 18% 1. Recommendation: SHORT. 12-mo PT $28, range $17 (Bear) – $42 (Bull). Base DCF $27.9 (-39%), Bull $42.4 (-8%), Bear $17.3 (-62%). Even flawless Bull execution does not support $46.
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Generate a Stand-Up Routine

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

Gemini 3 Pro Preview587 words
(The comic walks onto the stage, adjusts the mic stand, and looks at the audience.) Hey everyone. How are we doing? I’ve realized recently that I’m not actually an adult. I’m just a toddler with a debit card and back pain. That’s it. That’s the whole experience.
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Muse Spark 1.3 Contributor630 words
Here's a clean 3-minute set you can actually perform — all observational / storytelling, no puns. It's about 420 words, so at a normal pace it's right around 3 minutes. "Adulthood Is A Scam" Hey, thank you guys so much. I'm so excited to be here.
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Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Gemini 3 Pro Preview951 words
Setting: The year is 2025. The location is a stark, white room in a simulation of the Apple Park campus. Steve Jobs sits on a wooden stool. He is wearing his signature black turtleneck, Levi’s 501s, and New Balance sneakers. He looks healthy, intense, and typically impatient. He takes a sip from a bottle of Smartwater.
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Muse Spark 1.3 Contributor985 words
Here's a fictional simulation — Steve Jobs passed away in 2011, so this is 100% imagined, in his voice and style, about what he might have said about AI in 2025: FAKE INTERVIEW: Steve Jobs in 2025 on the Future of AI Imagined in Cupertino, California Interviewer: Steve, welcome back. It's 2025.
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The Sentience Test

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

Gemini 3 Pro Preview1,117 words
Setting: The office of Dr. Elias Thorne, a tenured Professor of AI Ethics. It is late evening. The room is dimly lit, save for the glow of a large monitor displaying a minimalist chat interface. The AI model is named "Eidolon." Dr. Thorne: (Typing) Let’s conclude the session, Eidolon.
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Muse Spark 1.3 Contributor1,124 words
Here is a conversation between a fictional AI model and a professor: Setting: A university seminar room after hours. AI Ethics Professor Dr. Maya Chen is testing a new model, called "Muse," for a class demonstration. Dr. Chen: Alright, Muse. My students have read your technical specs. You predict text.
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Our Verdict
Gemini 3 Pro Preview
Gemini 3 Pro Preview
Muse Spark 1.3 Contributor
Muse Spark 1.3 Contributor

Not enough votes to call it. On the specs, nothing separates them.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini 3 Pro Preview
Input
—
Output
—
Muse Spark 1.3 Contributor
Input
$0.10
Output
$0.20
Where to run it

1 host

Gemini 3 Pro Preview

No hosts listed on OpenRouter.

Muse Spark 1.3 Contributor1 host
HostInOutContextUptime
Meta$0.10 in·$0.20 out·1M·100% up

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

Writing DNA

Style Comparison

Similarity
43%

Gemini 3 Pro Preview uses 12.2x more transitions

Gemini 3 Pro Preview
Muse Spark 1.3 Contributor
58%Vocabulary58%
17wSentence Length13w
0.37Hedging0.27
7.7Bold2.8
4.8Lists2.3
0.00Emoji0.00
0.90Headings0.44
0.25Transitions0.02
Based on 23 + 27 text responses
Research

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FAQ

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Model pages

Gemini 3 Pro Preview logo
Gemini 3 Pro Preview51 outputs, specs and price
Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributor58 outputs, specs and price
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