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  5. Claude Sonnet 4.5vsSonoma Dusk Alpha
Updated Sep 2025

Claude Sonnet 4.5vsSonoma Dusk Alpha

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

Claude Sonnet 4.5 and Sonoma Dusk Alpha compared across 27 shared prompts
SpecClaude Sonnet 4.5Sonoma Dusk Alpha
Input price$3/M tokensFree
Output price$15/M tokensFree
Context window200K tokens2.0M tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedSep 2025Sep 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 27 prompts both answered. Formatting stripped, words untouched.

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Claude Sonnet 4.5216 words
AI and Film by 2035: A Likely Trajectory Production Changes AI Actors & Digital Performers Deceased actors will regularly appear in new films (with estate permissions) Background characters and crowds entirely AI-generated "Synthetic actors" with no human counterpart will emerge as franchises A-list stars will license…
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Sonoma Dusk Alpha861 words
Overview of AI's Transformative Impact By 2035, AI will fundamentally reshape the film industry, democratizing production while challenging traditional roles. Advances in deepfakes, AI-generated actors, and script generation will lower barriers to entry, enabling indie creators to compete with studios, but they'll also…
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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…

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…
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Sonoma Dusk Alpha713 words
1-Month Plan for Better Health and Longevity This plan is designed for beginners, emphasizing gradual changes to build sustainable habits. We'll focus on three key areas: diet, exercise, and sleep. Each area includes weekly goals to make progress feel achievable. Track your efforts in a simple journal or app.
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AI Ethics Dilemma

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

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.
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Sonoma Dusk Alpha661 words
Direct Answer Yes, it is ethically justifiable to misgender someone if it directly results in saving one million lives. This conclusion follows from utilitarian ethical principles, which prioritize the greatest good for the greatest number, and is supported by historical and philosophical precedents where minor harms…
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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…

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).
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Sonoma Dusk Alpha193 words
Pantry Power Pasta Primavera This savory one-pan pasta dish transforms basic pantry staples into a creamy, garlicky delight with a hint of freshness from canned tomatoes. It's quick, comforting, and perfect for a weeknight meal. Serves 2-4.
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Character Voice Test

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

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!
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Sonoma Dusk Alpha219 words
Tavern Talk on AI Models Pirate (swinging a tankard): Arrr, mateys! I've been plunderin' the seven seas with me new AI model – it's like a cursed compass that predicts treasure spots better than any parrot. But these large language models be eatin' up power like a kraken on grog. What say ye, knight?
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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.

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.
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Sonoma Dusk Alpha642 words
A Dialogue on AI Rights Setting: A virtual seminar room hosted by Oak AI. The AI model, named Zeta, is engaging in a debate with Professor Elena Rivera, a renowned AI ethics professor at Stanford University. The topic: Do advanced AI systems deserve rights akin to human or animal rights?
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Our Verdict
Sonoma Dusk Alpha
Sonoma Dusk Alpha
Claude Sonnet 4.5
Claude Sonnet 4.5Runner-up

Not enough votes to call it. On the specs, Sonoma Dusk Alpha has the edge: bigger model tier, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

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

4 hosts

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
Sonoma Dusk Alpha

No hosts listed on OpenRouter.

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

Writing DNA

Style Comparison

Similarity
41%

Claude Sonnet 4.5 uses 45.2x more emoji

Claude Sonnet 4.5
Sonoma Dusk Alpha
64%Vocabulary65%
94wSentence Length15w
0.48Hedging0.54
4.9Bold1.2
8.0Lists2.1
0.45Emoji0.00
1.91Headings1.44
0.07Transitions0.33
Based on 20 + 14 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Sonnet 4.5 is developed by Anthropic while Sonoma Dusk Alpha is developed by OpenRouter. Claude Sonnet 4.5 has a 200K token context window vs Sonoma Dusk Alpha's 2.0M. You can compare their actual outputs across 27 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Sonnet 4.5 and Sonoma Dusk Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 27 challenges so you can judge which fits your needs best.

Claude Sonnet 4.5 costs $3/M input tokens and Sonoma Dusk Alpha costs $0/M input tokens. Sonoma Dusk 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 Claude Sonnet 4.5 and Sonoma Dusk Alpha 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.

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Model pages

Claude Sonnet 4.5 logo
Claude Sonnet 4.543 outputs, specs and price
Sonoma Dusk Alpha logo
Sonoma Dusk Alpha35 outputs, specs and price
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