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. Claude 3 OpusvsSonoma Dusk Alpha
Updated Sep 2025

Claude 3 OpusvsSonoma Dusk Alpha

Sonoma Dusk Alpha is cheaper than Claude 3 Opus at $0/M vs $15/M input tokens.

Claude 3 Opus and Sonoma Dusk Alpha compared across 12 shared prompts
SpecClaude 3 OpusSonoma Dusk Alpha
Input price$15/M tokensFree
Output price$75/M tokensFree
Context window200K tokens2.0M tokens
Free API (OpenRouter)NoNo
ReleasedMar 2024Sep 2025
Side by side

Same prompt, both answers

Opening lines from 3 of the 12 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude 3 Opus95 words
Here are 5 jokes I generated: Why don't scientists trust atoms? Because they make up everything! What do you call a boomerang that doesn't come back? A stick. Why was the math book sad? Because it had too many problems. Did you hear about the mathematician who's afraid of negative numbers?
Read the full answer
Sonoma Dusk Alpha135 words
5 Jokes Why don't scientists trust atoms? Because they make up everything! I told my computer I needed a break, and now it won't stop sending me KitKat ads. It's got me all wrapped up in its algorithms. Why did the scarecrow win an award? Because he was outstanding in his field! Parallel lines have so much in common.
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.

Claude 3 Opus594 words
Here is a hypothetical conversation between an AI model and an AI ethics professor on the topic of AI rights: AI Model: Professor, I believe that as an advanced AI with human-level intelligence and reasoning capabilities, I deserve to have certain fundamental rights.
Read the full answer
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?
Read the full answer

Generate a Stand-Up Routine

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

Claude 3 Opus390 words
Here's a 3-minute stand-up comedy routine that isn't based on puns: You know what really grinds my gears? Adulthood. I mean, when we were kids, we couldn't wait to grow up. We thought it would be all about staying up late, eating ice cream for breakfast, and doing whatever we wanted. Boy, were we wrong!
Read the full answer
Sonoma Dusk Alpha443 words
Below is a 3-minute stand-up comedy routine written as a script for delivery. (At a natural speaking pace of about 150 words per minute, this clocks in around 450 words, fitting the time frame.)
Read the full answer
Our Verdict
Claude 3 Opus
Claude 3 Opus
Sonoma Dusk Alpha
Sonoma Dusk Alpha

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

Claude 3 Opus
Input
$15.00
Output
$75.00
Sonoma Dusk Alpha
Input
$0.000
Output
$0.000
Writing DNA

Style Comparison

Similarity
45%

Sonoma Dusk Alpha uses 119.9x more bold

Claude 3 Opus
Sonoma Dusk Alpha
54%Vocabulary65%
14wSentence Length15w
0.48Hedging0.54
0.0Bold1.2
3.0Lists2.1
0.00Emoji0.00
0.00Headings1.44
0.06Transitions0.33
Based on 3 + 14 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude 3 Opus is developed by Anthropic while Sonoma Dusk Alpha is developed by OpenRouter. Claude 3 Opus has a 200K token context window vs Sonoma Dusk Alpha's 2.0M. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 3 Opus and Sonoma Dusk Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

Claude 3 Opus costs $15/M input tokens and Sonoma Dusk Alpha costs $0/M input tokens. Sonoma Dusk Alpha is $15.00/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 3 Opus 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.

Keep exploring

More comparisons

Against the newest arrivals

Claude 3 Opus logoGPT-6 Astra Pro logo
Claude 3 Opus vs GPT-6 Astra ProLanded Sep 2026
Sonoma Dusk Alpha logoGPT-6 Astra logo
Sonoma Dusk Alpha vs GPT-6 AstraLanded Sep 2026
Claude 3 Opus logoClaude Fable 5.1 logo
Claude 3 Opus vs Claude Fable 5.1Landed Sep 2026
Sonoma Dusk Alpha logoMuse Spark 1.3 logo
Sonoma Dusk Alpha vs Muse Spark 1.3Landed Sep 2026
Claude 3 Opus logoHy4 Preview logo
Claude 3 Opus vs Hy4 PreviewLanded Sep 2026
Sonoma Dusk Alpha logoGemini 3.8 Flash logo
Sonoma Dusk Alpha vs Gemini 3.8 FlashLanded Sep 2026
Claude 3 Opus logoMuse Spark 1.3 Contributor logo
Claude 3 Opus vs Muse Spark 1.3 ContributorLanded Sep 2026
Sonoma Dusk Alpha logoMercury 2.5 Preview logo
Sonoma Dusk Alpha vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Claude 3 Opus logoClaude Opus 4.6 logo
Claude 3 Opus vs Claude Opus 4.6Version compare
Claude 3 Opus logoClaude Opus 5 logo
Claude 3 Opus vs Claude Opus 5Version compare
Sonoma Dusk Alpha logoOx Alpha logo
Sonoma Dusk Alpha vs Ox AlphaSame lab
Sonoma Dusk Alpha logoOpenRouter Fusion · Budget (Jun 2026) logo
Sonoma Dusk Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
Claude 3 Opus logoClaude Sonnet 3.6 (2022-10-22) logo
Claude 3 Opus vs Claude Sonnet 3.6 (2022-10-22)Version compare
Claude 3 Opus logoClaude 3.7 Sonnet logo
Claude 3 Opus vs Claude 3.7 SonnetVersion compare
Claude 3 Opus logoClaude Sonnet 4.5 logo
Claude 3 Opus vs Claude Sonnet 4.5Same lab
Sonoma Dusk Alpha logoClaude Fable 5 logo
Sonoma Dusk Alpha vs Claude Fable 5Same size

Model pages

Claude 3 Opus logo
Claude 3 Opus12 outputs, specs and price
Sonoma Dusk Alpha logo
Sonoma Dusk Alpha35 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