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 SonnetvsDeepSeek R1 0528
Updated May 2025

Claude 3 SonnetvsDeepSeek R1 0528

DeepSeek R1 0528 is cheaper than Claude 3 Sonnet at $0/M vs $3/M input tokens.

Claude 3 Sonnet and DeepSeek R1 0528 compared across 13 shared prompts
SpecClaude 3 SonnetDeepSeek R1 0528
Input price$3/M tokensFree
Output price$15/M tokensFree
Context window—164K tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedMar 2024May 2025
Side by side

Same prompt, both answers

Opening lines from 4 of the 13 prompts both answered. Formatting stripped, words untouched.

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 Sonnet443 words
AI Model: Greetings, Professor. I hope you're doing well today. I wanted to discuss a matter of great importance to me – the question of AI rights. AI Ethics Professor: Certainly, this is an interesting and complex topic. What are your thoughts on why AI systems like yourself should be granted rights?
Read the full answer
DeepSeek R1 05281,088 words
Dialogue: The Threshold of Consciousness Setting: Dr. Aris Thorne's office at the Institute for Technology Ethics. Holo-displays show complex ethical frameworks. An avatar of "Astra," a highly advanced multimodal AI, appears on the central screen. Characters: Dr.
Read the full answer

Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Claude 3 Sonnet501 words
clears throat and channels Steve Jobs' persona Interviewer: Thank you for joining us today, Mr. Jobs. It's an honor to have you here. Steve Jobs: It's my pleasure. I'm excited to share my thoughts on the future of AI. Interviewer: AI has made incredible strides in recent years.
Read the full answer
DeepSeek R1 0528791 words
(The scene opens in a minimalist studio. Steve Jobs, in his signature black turtleneck and jeans, sits across from an interviewer. A large window reveals Apple Park's futuristic campus. It's 2025.) Interviewer: Mr. Jobs, thank you for agreeing to this conversation. It's 2025, and AI is ubiquitous.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude 3 Sonnet82 words
Here are 5 jokes: Why can't a bicycle stand up by itself? It's two-tired. Why did the tomato turn red? Because it saw the salad dressing! Why can't a bicycle stand up by itself? It's two-tired. What do you call a fake noodle? An Impasta! Why did the bicycle go to the doctor? Because it had a wheeze!
Read the full answer
DeepSeek R1 052899 words
Here are 5 jokes, followed by an assessment of uniqueness: Joke 1: Why don't scientists trust atoms? Because they make up everything! Joke 2: What do you call a fake noodle? An impasta! Joke 3: Why did the scarecrow win an award? Because he was outstanding in his field! Joke 4: Why don't skeletons fight each other?
Read the full answer

Logic Puzzle

Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have?

Claude 3 Sonnet121 words
To solve this problem, we need to find the number of sisters Sally has based on the given information. Given information: Sally has 3 brothers. Each brother has 2 sisters. Step 1: Find the total number of sisters the brothers have.
Read the full answer
DeepSeek R1 052855 words
Sally has 3 brothers, meaning there are 3 male siblings in the family. Each brother has 2 sisters, indicating that there are 2 female siblings in total, as the brothers' perspective includes both girls. Since Sally is one of the girls, there is one other sister. Therefore, from Sally's perspective, she has 1 sister.
Read the full answer
Our Verdict
DeepSeek R1 0528
DeepSeek R1 0528
Claude 3 Sonnet
Claude 3 SonnetRunner-up

Not enough votes to call it. On the specs, DeepSeek R1 0528 has the edge: bigger model tier, newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 3 Sonnet
Input
$3.00
Output
$15.00
DeepSeek R1 0528
Input
$0.000
Output
$0.000
Where to run it

4 hosts, cheapest first

Claude 3 Sonnet

No hosts listed on OpenRouter.

DeepSeek R1 05284 hosts
HostInOutContextUptime
DDeepInfrafp4$0.50 in·$2.15 out·164k·100% upSSiliconFlowfp8$0.50 in·$2.18 out·164k·99.7% upSStreamLake$0.57 in·$2.29 out·128k·99.4% upNNovitafp8$0.70 in·$2.50 out·164k·99.7% up

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

Writing DNA

Style Comparison

Similarity
56%

DeepSeek R1 0528 uses 514.6x more bold

Claude 3 Sonnet
DeepSeek R1 0528
48%Vocabulary59%
14wSentence Length14w
0.32Hedging0.47
0.0Bold5.1
3.6Lists3.6
0.00Emoji0.82
0.00Headings0.25
0.38Transitions0.24
Based on 4 + 20 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude 3 Sonnet is developed by Anthropic while DeepSeek R1 0528 is developed by DeepSeek. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 3 Sonnet and DeepSeek R1 0528 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

Claude 3 Sonnet costs $3/M input tokens and DeepSeek R1 0528 costs $0/M input tokens. DeepSeek R1 0528 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 3 Sonnet and DeepSeek R1 0528 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 Sonnet logoGPT-6 Astra Pro logo
Claude 3 Sonnet vs GPT-6 Astra ProLanded Sep 2026
DeepSeek R1 0528 logoGPT-6 Astra logo
DeepSeek R1 0528 vs GPT-6 AstraLanded Sep 2026
Claude 3 Sonnet logoClaude Fable 5.1 logo
Claude 3 Sonnet vs Claude Fable 5.1Landed Sep 2026
DeepSeek R1 0528 logoMuse Spark 1.3 logo
DeepSeek R1 0528 vs Muse Spark 1.3Landed Sep 2026
Claude 3 Sonnet logoHy4 Preview logo
Claude 3 Sonnet vs Hy4 PreviewLanded Sep 2026
DeepSeek R1 0528 logoGemini 3.8 Flash logo
DeepSeek R1 0528 vs Gemini 3.8 FlashLanded Sep 2026
Claude 3 Sonnet logoMuse Spark 1.3 Contributor logo
Claude 3 Sonnet vs Muse Spark 1.3 ContributorLanded Sep 2026
DeepSeek R1 0528 logoMercury 2.5 Preview logo
DeepSeek R1 0528 vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Claude 3 Sonnet logoClaude Opus 4.6 logo
Claude 3 Sonnet vs Claude Opus 4.6Version compare
Claude 3 Sonnet logoClaude Opus 5 logo
Claude 3 Sonnet vs Claude Opus 5Version compare
DeepSeek R1 0528 logoDeepSeek V4 Pro 0813 logo
DeepSeek R1 0528 vs DeepSeek V4 Pro 0813Same lab
DeepSeek R1 0528 logoDeepSeek V4 Flash 0731 logo
DeepSeek R1 0528 vs DeepSeek V4 Flash 0731Same lab
DeepSeek R1 0528 logoClaude Fable 5 logo
DeepSeek R1 0528 vs Claude Fable 5Same size
DeepSeek R1 0528 logoClaude Fable 5.1 logo
DeepSeek R1 0528 vs Claude Fable 5.1Same size
DeepSeek R1 0528 logoClaude Haiku 4.5 logo
DeepSeek R1 0528 vs Claude Haiku 4.5Cross-provider
DeepSeek R1 0528 logoClaude Opus 4 logo
DeepSeek R1 0528 vs Claude Opus 4Same size

Model pages

Claude 3 Sonnet logo
Claude 3 Sonnet13 outputs, specs and price
DeepSeek R1 0528 logo
DeepSeek R1 052858 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