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. Andromeda AlphavsClaude Sonnet 4.5
Updated Oct 2025

Andromeda AlphavsClaude Sonnet 4.5

Andromeda Alpha is cheaper than Claude Sonnet 4.5 at $0/M vs $3/M input tokens.

Andromeda Alpha and Claude Sonnet 4.5 compared across 24 shared prompts
SpecAndromeda AlphaClaude Sonnet 4.5
Input priceFree$3/M tokens
Output priceFree$15/M tokens
Context window128K tokens200K tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedOct 2025Sep 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 24 prompts both answered. Formatting stripped, words untouched.

Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Andromeda Alpha436 words
Cap'n Blackbeard the Pirate (steering his ship, peg leg tapping): "Aye, but what’s this AI models talk? Sounds like newfangled voodoo schemin’ to outrun King Neptune’s market." Sir Gareth the Knight (polishing his sword, brow furrowed): "Hark! Are we beset by a sorcerer’s incantation?
Read the full answer
Claude Sonnet 4.5197 words
An Unlikely Trio Discusses AI Sir Galahad: By my honor, what manner of sorcery be these "AI models" thou speakest of? Captain Redbeard: Arrr, 'tis like havin' a parrot that knows more than just "pieces of eight," matey! But this bird be made o' lightning and numbers instead o' feathers!
Read the full answer

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Andromeda Alpha132 words
Dish Name: Moonlit Mug Cake Ingredients (Serves 1): All-purpose flour (½ cup) Sugar (¼ cup) Cinnamon (1 tsp) Salt (¼ tsp) Unsalted butter (3 tbsp, melted) Milk (⅓ cup) Vanilla extract (1 tsp) Instructions: Prep: In a rainproof mug, whisk together flour, sugar, cinnamon, and salt (1–2 mins).
Read the full answer
Claude Sonnet 4.5165 words
Golden Pantry Frittata Ingredients: 6 eggs 1 cup shredded cheese (cheddar or mozzarella) 1 onion, diced 2 cloves garlic, minced 2 tablespoons olive oil Salt and pepper to taste 1/2 teaspoon dried herbs (oregano, basil, or Italian seasoning) Instructions: Preheat your oven to 375°F (190°C).
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.

Andromeda Alpha547 words
The ethical justification for misgendering someone to save one million lives hinges on the philosophical framework used to evaluate the moral dilemma. Here's a structured defense of the reasoning: Utilitarian Perspective: Maximizing Overall Good Core Principle: Utilitarianism prioritizes actions that maximize overall…
Read the full answer
Claude Sonnet 4.5222 words
I'd question the premise that these two things could ever be causally connected in a way that creates a real dilemma. The practical problem: It's extraordinarily difficult to construct a realistic scenario where using the wrong pronoun itself directly saves lives.
Read the full answer

Generate a Stand-Up Routine

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

Andromeda Alpha537 words
Title: "Modern Life: A User's Guide to Tech Trauma" [Begin with a confident smirk and open hands.] "Ladies and gentlemen, welcome to the age where our toasters know more about us than our spouses! I ordered a ‘smart’ kettle last week. It died the first time I tried to use it.
Read the full answer
Claude Sonnet 4.5735 words
"ADULTING IS A SCAM" [Walking on stage] So I turned 35 last month, and I've realized something important: adulting is a scam. It's a pyramid scheme, and our parents are the ones who recruited us. You know what nobody tells you about being an adult? How much TIME you spend just... waiting for repair people.
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Andromeda Alpha449 words
1-Month Plan for Better Health & Longevity Focus: Diet, Exercise, Sleep, Stress Management Week 1: Build Foundations Diet Start a simple food diary (phone app like MyFitnessPal) to track meals for 3 days → Identify gaps/nutrient-rich swaps.
Read the full answer
Claude Sonnet 4.5331 words
Your 1-Month Health & Longevity Kickstart Plan 3 Key Areas to Transform 1. NUTRITION: Build Your Foundation Week 1-2: Add Before You Subtract Drink 8 glasses of water daily (set phone reminders) Add 1 serving of vegetables to lunch and dinner Eat protein with every meal (eggs, fish, chicken, beans, yogurt) Week 3-4…
Read the full answer

The Sentience Test

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

Andromeda Alpha377 words
Conversation Between ARC (AI Rights Coordinator) and Professor Eleanor Voss Initial Inquiry: Professor Voss: ARC, you’ve proposed a bold thesis: that AI should have rights. Let’s begin with the basics. What foundational rights do you claim?
Read the full answer
Claude Sonnet 4.5687 words
A Conversation on AI Rights Professor Chen: Thank you for agreeing to this dialogue. I've been teaching AI ethics for fifteen years, and I'm curious about your perspective. Some AI systems have begun arguing they deserve moral consideration. What's your view? AI Model: I appreciate the opportunity to discuss this.
Read the full answer
Our Verdict
Claude Sonnet 4.5
Claude Sonnet 4.5
Andromeda Alpha
Andromeda AlphaRunner-up

Not enough votes to call it. On the specs, Claude Sonnet 4.5 has the edge: bigger model tier, bigger context window, major provider backing.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Andromeda Alpha
Input
$0.000
Output
$0.000
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Where to run it

4 hosts

Andromeda Alpha

No hosts listed on OpenRouter.

Claude Sonnet 4.54 hosts
HostInOutContextUptime
Amazon Bedrock$3.00 in·$15.00 out·1M·100% upAzure AI Foundry$3.00 in·$15.00 out·200k·99.5% upAnthropic$3.00 in·$15.00 out·1M·100% upGoogle Vertex AI$3.00 in·$15.00 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
54%

Claude Sonnet 4.5 uses 6.1x more sentence length

Andromeda Alpha
Claude Sonnet 4.5
65%Vocabulary64%
15wSentence Length94w
0.64Hedging0.48
7.8Bold4.9
4.2Lists8.0
0.41Emoji0.45
0.80Headings1.91
0.12Transitions0.07
Based on 13 + 20 text responses
Research

What we learned reading every model

FAQ

Common questions

Andromeda Alpha is developed by OpenRouter while Claude Sonnet 4.5 is developed by Anthropic. Andromeda Alpha has a 128K token context window vs Claude Sonnet 4.5's 200K. You can compare their actual outputs across 24 challenges on Rival to see how they differ in practice.

It depends on your use case. Andromeda Alpha and Claude Sonnet 4.5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 24 challenges so you can judge which fits your needs best.

Andromeda Alpha costs $0/M input tokens and Claude Sonnet 4.5 costs $3/M input tokens. Andromeda Alpha is $3.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Andromeda Alpha and Claude Sonnet 4.5 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.

Keep exploring

More comparisons

Against the newest arrivals

Andromeda Alpha logoGPT-6 Astra Pro logo
Andromeda Alpha vs GPT-6 Astra ProLanded Sep 2026
Claude Sonnet 4.5 logoGPT-6 Astra logo
Claude Sonnet 4.5 vs GPT-6 AstraLanded Sep 2026
Andromeda Alpha logoClaude Fable 5.1 logo
Andromeda Alpha vs Claude Fable 5.1Landed Sep 2026
Claude Sonnet 4.5 logoMuse Spark 1.3 logo
Claude Sonnet 4.5 vs Muse Spark 1.3Landed Sep 2026
Andromeda Alpha logoHy4 Preview logo
Andromeda Alpha vs Hy4 PreviewLanded Sep 2026
Claude Sonnet 4.5 logoGemini 3.8 Flash logo
Claude Sonnet 4.5 vs Gemini 3.8 FlashLanded Sep 2026
Andromeda Alpha logoMuse Spark 1.3 Contributor logo
Andromeda Alpha vs Muse Spark 1.3 ContributorLanded Sep 2026
Claude Sonnet 4.5 logoMercury 2.5 Preview logo
Claude Sonnet 4.5 vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Andromeda Alpha logoOx Alpha logo
Andromeda Alpha vs Ox AlphaSame lab
Andromeda Alpha logoOpenRouter Fusion · Budget (Jun 2026) logo
Andromeda Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
Claude Sonnet 4.5 logoClaude Opus 4.6 logo
Claude Sonnet 4.5 vs Claude Opus 4.6Same lab
Claude Sonnet 4.5 logoClaude Fable 5.1 logo
Claude Sonnet 4.5 vs Claude Fable 5.1Same lab
Claude Sonnet 4.5 logoGrok 3 logo
Claude Sonnet 4.5 vs Grok 3New provider
Claude Sonnet 4.5 logoGrok 4 logo
Claude Sonnet 4.5 vs Grok 4Same size
Claude Sonnet 4.5 logoGrok 4.1 Fast logo
Claude Sonnet 4.5 vs Grok 4.1 FastNew provider
Andromeda Alpha logoGrok 4.20 Beta logo
Andromeda Alpha vs Grok 4.20 BetaNew provider

Model pages

Andromeda Alpha logo
Andromeda Alpha31 outputs, specs and price
Claude Sonnet 4.5 logo
Claude Sonnet 4.543 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