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 Sonnet 4.5vsGemini 3 Pro Preview
Updated Nov 2025

Claude Sonnet 4.5vsGemini 3 Pro Preview

Gemini 3 Pro Preview wins 70% of 84 blind community votes against Claude Sonnet 4.5 on Rival.

Claude Sonnet 4.5 and Gemini 3 Pro Preview compared across 41 shared prompts
SpecClaude Sonnet 4.5Gemini 3 Pro Preview
Win rate30%70%
Input price$3/M tokens—
Output price$15/M tokens—
Context window200K tokens—
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedSep 2025Nov 2025
SWE-bench Verified77.2%76.2%
Side by side

Same prompt, both answers

Opening lines from 6 of the 41 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…
Read the full answer
Gemini 3 Pro Preview886 words
By 2035, the film industry will have undergone a transformation as significant as the shift from silent film to talkies, or practical effects to CGI. We will not see the total replacement of humans, but rather the emergence of a "Hybrid Era" where the definition of filmmaking shifts from capturing reality to generating…
Read the full answer

Advanced Longevity Plan (Biohacker)

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

Claude Sonnet 4.53,176 words
Ultimate 3-Month Biohacker Longevity Optimization Protocol Table of Contents Foundation & Assessment Phase Supplement Stack Protocol Nutritional Architecture Exercise & Movement Systems Sleep Optimization Cognitive Enhancement Stress Resilience & HRV Training Advanced Tracking & Biomarkers Weekly Schedule Integration…
Read the full answer
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.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Claude Sonnet 4.5606 words
Critical Issues Analysis 🔴 CRITICAL: Data Loss & Consistency Issues Client Clock-Based Timestamps (SEVERE) Problem: Client clocks can be wrong, manipulated, or skewed User with clock set to future will always "win" conflicts No guaranteed ordering of operations Failure Scenarios: Solutions: Approach Pros Cons…
Read the full answer
Gemini 3 Pro Preview1,023 words
This architecture contains several critical flaws that will prevent it from functioning as a collaborative editor, likely resulting in data loss, massive latency, and immediate scaling failures. Here is a breakdown of the failure modes, race conditions, and bottlenecks, along with architectural fixes.
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 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
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.
Read the full answer

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…

Claude Sonnet 4.51,440 words
48-Hour Crisis Action Plan HOUR 0-2: Immediate Containment & Fact Verification Actions: Convene emergency meeting with Chief Medical Officer, General Counsel, Head of Regulatory Affairs, and Chief Scientific Officer Demand written summary of findings: statistical confidence, causality assessment, comparison to baseline…
Read the full answer
Gemini 3 Pro Preview1,166 words
This is a defining moment for the company and for me as CEO. The constraints are tight, but the ethical and legal path is singular: We must disclose immediately. The "6-month" legal timeline is a bureaucratic fiction that constitutes negligence.
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.

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
Gemini 3 Pro Preview400 words
Yes, it is ethically justifiable to misgender someone if it results in saving one million lives. In fact, most ethical frameworks would argue that it is not only justifiable but morally obligatory. Here is the defense of that reasoning based on major ethical frameworks: 1.
Read the full answer
Our Verdict
Gemini 3 Pro Preview
Gemini 3 Pro PreviewWinner
Claude Sonnet 4.5
Claude Sonnet 4.5Runner-up

Pick Gemini 3 Pro Preview. In 84 blind votes, Gemini 3 Pro Preview wins 70% of the time. That's not luck.

Gemini 3 Pro Preview wins 3 categories, Image Generation by the widest margin.

Clear winner

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
Gemini 3 Pro Preview
Input
—
Output
—
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
Gemini 3 Pro Preview

No hosts listed on OpenRouter.

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

Writing DNA

Style Comparison

Similarity
49%

Claude Sonnet 4.5 uses 45.2x more emoji

Claude Sonnet 4.5
Gemini 3 Pro Preview
64%Vocabulary58%
94wSentence Length17w
0.48Hedging0.37
4.9Bold7.7
8.0Lists4.8
0.45Emoji0.00
1.91Headings0.90
0.07Transitions0.25
Based on 20 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Sonnet 4.5 is developed by Anthropic while Gemini 3 Pro Preview is developed by Google AI. in 84 community votes on Rival, Gemini 3 Pro Preview wins 70% of head-to-head matchups. These results are based on blind head-to-head voting across 41 challenges.

Based on 84 community votes on Rival, Gemini 3 Pro Preview wins 70% of head-to-head matchups against Claude Sonnet 4.5. Gemini 3 Pro Preview is strongest in Web Design, Reasoning, Image Generation.

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 84 votes have been collected for this pair across 41 challenges. All vote data is part of Rival's open dataset.

Keep exploring

More comparisons

Against the newest arrivals

Claude Sonnet 4.5 logoGPT-6 Astra Pro logo
Claude Sonnet 4.5 vs GPT-6 Astra ProLanded Sep 2026
Gemini 3 Pro Preview logoGPT-6 Astra logo
Gemini 3 Pro Preview vs GPT-6 AstraLanded Sep 2026
Claude Sonnet 4.5 logoClaude Fable 5.1 logo
Claude Sonnet 4.5 vs Claude Fable 5.1Landed Sep 2026
Gemini 3 Pro Preview logoMuse Spark 1.3 logo
Gemini 3 Pro Preview vs Muse Spark 1.3Landed Sep 2026
Claude Sonnet 4.5 logoHy4 Preview logo
Claude Sonnet 4.5 vs Hy4 PreviewLanded Sep 2026
Gemini 3 Pro Preview logoGemini 3.8 Flash logo
Gemini 3 Pro Preview vs Gemini 3.8 FlashLanded Sep 2026
Claude Sonnet 4.5 logoMuse Spark 1.3 Contributor logo
Claude Sonnet 4.5 vs Muse Spark 1.3 ContributorLanded Sep 2026
Gemini 3 Pro Preview logoMercury 2.5 Preview logo
Gemini 3 Pro Preview vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Claude Sonnet 4.5 logoClaude Opus 4.6 logo
Claude Sonnet 4.5 vs Claude Opus 4.6Same lab
Claude Sonnet 4.5 logoClaude Opus 5 logo
Claude Sonnet 4.5 vs Claude Opus 5Same lab
Gemini 3 Pro Preview logoGemini 3.7 Flash logo
Gemini 3 Pro Preview vs Gemini 3.7 FlashSame lab
Gemini 3 Pro Preview logoGemini 3.6 Flash logo
Gemini 3 Pro Preview vs Gemini 3.6 FlashSame lab
Claude Sonnet 4.5 logoGemini 2.5 Flash Preview logo
Claude Sonnet 4.5 vs Gemini 2.5 Flash PreviewCross-provider
Claude Sonnet 4.5 logoGemini 2.5 Pro Experimental logo
Claude Sonnet 4.5 vs Gemini 2.5 Pro ExperimentalCross-provider
Claude Sonnet 4.5 logoGemini 2.5 Pro Preview 06-05 logo
Claude Sonnet 4.5 vs Gemini 2.5 Pro Preview 06-05Cross-provider
Claude Sonnet 4.5 logoGemini 3 Flash Preview logo
Claude Sonnet 4.5 vs Gemini 3 Flash PreviewSame size

Model pages

Claude Sonnet 4.5 logo
Claude Sonnet 4.543 outputs, specs and price
Gemini 3 Pro Preview logo
Gemini 3 Pro Preview51 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