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  1. Home
  2. Models
  3. Muse Spark 1.3 Contributor
Updated Sep 2, 2026
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Openings

How Muse Spark 1.3 Contributor starts an answer

The first lines of 5 of its 24 written answers. Formatting stripped, words untouched.

Historical Counterfactual Analysis

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

2,344 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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Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,634 words
This contract is extremely one-sided. Every clause contains language that could be exploited to get unpaid work, withhold pay, seize your own IP, or leave you with unlimited liability. Disclaimer: This is general legal information, not legal advice and not an attorney-client relationship.
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

1,526 words
Shiretoko Dawn — Kombu-Cured Hokkaido Scallop, Fermented Porcini, Yuzu, Oscietra Caviar Butter-poached scallop, roasted porcini & toasted hay consommé, yuzu-buttermilk pearls, seaweed brown-butter, porcini soil, coral tuile Serves 4 as a tasting-course Autumn The Concept / Narrative On the Shiretoko Peninsula in…
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Movie Analysis

Analyze the themes, symbolism, and cinematography in the movie "Blade Runner 2049" and how they connect to the original film. Provide a…

1,432 words
Spoiler warning: This goes deep into both films. Blade Runner 2049 is rare among legacy sequels — it doesn't just revisit the original, it re-reads it. Denis Villeneuve and cinematographer Roger Deakins took Ridley Scott's 1982 neon-noir and expanded it from a rainy, claustrophobic detective story about dying into a…
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Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

1,386 words
As CEO, you disclose — immediately, voluntarily, and completely. There is no version of "wait for more data" that is ethical, legal, or even financially smart. Here's the math that makes the decision for you: 4,000,000 patients x 1/8,000 risk over 5 years = ~500 cases of liver failure.
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Compare Muse Spark 1.3 Contributor

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Muse Spark 1.3 Contributor vs Gemini 3.7 Flash54 shared prompts · Landed Aug 2026
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Muse Spark 1.3 Contributor vs Gemini 3.6 Flash54 shared prompts · Landed Jul 2026
Muse Spark 1.3 Contributor vs Muse Spark 1.154 shared prompts · Landed Jul 2026

Prompts Muse Spark 1.3 Contributor answered

  • Tamagotchi Virtual Petweb design
  • Generate a Stand-Up Routineconversation
  • SVG Layout Challengeimage generation
  • Beginner's Longevity Planreasoning
  • The Sentience Testreasoning
  • Linear App Cloneweb design

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Muse Spark 1.3 Contributor

Muse Spark 1.3 Contributor

Meta's lower-cost Muse Spark 1.3 tier for experiments, learning, coding and early agent workflows. It follows information across long tasks and asks for confirmation when inputs conflict. Access is restricted to adults; prompts and outputs may be used to improve Meta's products.

Ranks#8Logo Design#8Summarization#9Creative Coding#9Historical Analysis#10Analysis & Critique#10Game Development
OpenRouter
Provider
Meta AI
Released
2026-09-02
Size
LARGE
Free API (OpenRouter)
No
Per 1M tokens
$0.10 in · $0.20 out
Rival’s tab
$0.07
58/58 receipts survived

Free API availability

No free endpoint for Muse Spark 1.3 Contributor was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"meta/muse-spark-1.3-contributor"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA
Writing DNA

Stylometric Fingerprint

Based on 27 text responses
Tick = global average
Vocabulary Diversity58%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length13.2 words

Average words per sentence.

Hedging0.27

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting2.8

**Bold** markers per 1,000 characters.

List Usage2.3

Bullet and numbered list items per 1,000 characters.

Section Structure0.44

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.02

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
83%
Across 27 responses

Favorites

Casablanca

Movie

Casablanca

19438.1
Abbey Road

Album

Abbey Road

The Beatles
Dune

Book

Dune

Frank Herbert
Kyoto

City

Kyoto

Japan
Minecraft

Game

Minecraft

Action, Arcade4.4
Sponsored

Model Responses

53 outputs · $0.07 tracked across 53 receipts

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

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Editable skills for interface polish and interaction.

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Muse Spark 1.3 Contributor vs Ox Alpha

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RANKINGS

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