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 3.7 Thinking SonnetvsClaude Sonnet 4
Updated May 2025

Claude 3.7 Thinking SonnetvsClaude Sonnet 4

Claude 3.7 Thinking Sonnet and Claude Sonnet 4 are dead even across 42 blind community votes on Rival.

Claude 3.7 Thinking Sonnet and Claude Sonnet 4 compared across 54 shared prompts
SpecClaude 3.7 Thinking SonnetClaude Sonnet 4
Win rate50%50%
Input price$6/M tokens$3/M tokens
Output price$30/M tokens$15/M tokens
Context window200K tokens200K tokens
ParametersNot disclosedNot disclosed
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedFeb 2025May 2025
AIME80.0%33.1% (w/o extended thinking)
Side by side

Same prompt, both answers

Opening lines from 6 of the 54 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.

Claude 3.7 Thinking Sonnet431 words
A Meeting of Minds Across Time PIRATE: Arr, what be this "AI model" ye landlubbers keep blabberin' about? Some kind of treasure map that finds the gold for ye? KNIGHT: Good pirate, from what I understand, these "artificial intelligences" are like magical scribes that can complete a quest without a knight to wield the…
Read the full answer
Claude Sonnet 4237 words
Sir Galahad: By my sword, what sorcery is this "artificial intelligence" you speak of? 'Tis surely the work of dark wizards! Captain Blackbeard: Arrr, ye landlubber! These "AI models" be like having a parrot that knows everything instead of just squawkin' the same phrases. I could use one to find buried treasure!
Read the full answer

Futuristic Prediction

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

Claude 3.7 Thinking Sonnet427 words
How AI Will Transform the Film Industry by 2035 By 2035, artificial intelligence will likely revolutionize filmmaking across the entire production pipeline. Here's how various AI technologies might reshape the industry: Deepfakes and Digital Humans Hyper-realistic digital actors will become indistinguishable from…
Read the full answer
Claude Sonnet 4268 words
AI's Transformation of Film by 2035 Production Revolution AI Actors & Digital Performers Deceased star revivals: Convincing digital resurrections of iconic actors for new films, with estate permissions and ethical frameworks Synthetic lead actors: Fully AI-generated performers with consistent personalities across…
Read the full answer

Generate a Stand-Up Routine

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

Claude 3.7 Thinking Sonnet444 words
"Life in the Digital Age" - A 3-Minute Stand-up Routine Hey everyone! Great to be here tonight. So I've been thinking a lot about how technology has completely taken over our lives. You know what's crazy? We now have smart everything. Smart fridges, smart toilets... I got a smart mattress last month.
Read the full answer
Claude Sonnet 4659 words
"Adulting is Hard" walks on stage, adjusts mic So I\'m 30 now, which means I\'m officially an adult. Apparently. Though I still feel like I\'m just a confused teenager wearing a slightly more expensive t-shirt. You know what nobody tells you about being an adult?
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 3.7 Thinking Sonnet1,727 words
Comprehensive 3-Month Longevity Optimization Protocol Initial Assessment Phase (Week 0) Establish your baseline with these measurements before beginning: Blood Panel: Complete metabolic panel, lipid profile, inflammatory markers (hsCRP, IL-6), hormones (testosterone, estrogen, DHEA, cortisol), fasting glucose, HbA1c…
Read the full answer
Claude Sonnet 41,028 words
The Comprehensive 3-Month Longevity Optimization Protocol Overview & Foundation This protocol integrates cutting-edge biohacking strategies with evidence-based longevity research. Each com ponent is designed to work synergistically for maximum healthspan and performance optimization.
Read the full answer

Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Claude 3.7 Thinking Sonnet290 words
HarborTech Services LBO Underwriting Year-by-Year Financial Model (FY2026-2030) Metric ($M) FY2026 FY2027 FY2028 FY2029 FY2030 Revenue $972.0 $1,040.0 $1,102.4 $1,157.6 $1,215.5 EBITDA $136.1 $156.0 $176.4 $191.0 $206.6 Cash Interest - Term Loan $43.2 $41.0 $37.6 $32.8 $26.8 Cash Interest - Mezzanine $21.6 $22.0 $22.5…
Read the full answer
Claude Sonnet 4445 words
HarborTech Services LBO Analysis Sources & Uses at Entry (FY2025) Enterprise Value: $900M × 12.0x = $1,440M Transaction Fees: $1,440M × 2.0% = $28.8M Sources: Term Loan: $900M × 4.0x = $480M Mezzanine: $900M × 1.5x = $180M Equity: $1,440M + $28.8M - $480M - $180M = $808.8M Year-by-Year Operating Model (FY2026-FY2030)…
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

Claude 3.7 Thinking Sonnet632 words
How Large Language Models Work: Three Tailored Explanations For an Experienced Software Engineer What makes LLMs fascinating from a systems perspective is that they're essentially massive distributed computing graphs that learn to compress and reconstitute information through backpropagation.
Read the full answer
Claude Sonnet 4513 words
For the Software Engineer Think of it like this: you're building a massively parallel system that processes tokens (words/subwords) through a pipeline of transformer blocks, each containing attention mechanisms and feed-forward networks.
Read the full answer
Our Verdict
Claude 3.7 Thinking Sonnet
Claude 3.7 Thinking Sonnet
Claude Sonnet 4
Claude Sonnet 4

Too close to call. Pick based on your use case.

Pick Claude 3.7 Thinking Sonnet for Web Design. Pick Claude Sonnet 4 for Image Generation.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 3.7 Thinking Sonnet
Input
$6.00
Output
$30.00
Claude Sonnet 4
Input
$3.00
2.0× cheaper
Output
$15.00
2.0× cheaper

Claude Sonnet 4 is cheaper on both: 2.0× input, 2.0× output.

Where to run it

2 hosts

Claude 3.7 Thinking Sonnet

No hosts listed on OpenRouter.

Claude Sonnet 42 hosts
HostInOutContextUptime
Amazon Bedrock$3.00 in·$15.00 out·200k·100% upGoogle Vertex AI$3.00 in·$15.00 out·1M·0% up

Per million tokens. Prices and uptime via OpenRouter, checked 19 Sep 2026.

Writing DNA

Style Comparison

Similarity
89%

Claude Sonnet 4 uses 70.1x more emoji

Claude 3.7 Thinking Sonnet
Claude Sonnet 4
62%Vocabulary64%
51wSentence Length81w
0.62Hedging0.56
2.0Bold4.5
4.1Lists6.6
0.00Emoji0.70
1.63Headings1.59
0.17Transitions0.20
Based on 26 + 28 text responses
Research

What we learned reading every model

FAQ

Common questions

Both are developed by Anthropic but target different use cases. Claude 3.7 Thinking Sonnet has a 200K token context window vs Claude Sonnet 4's 200K. These results are based on blind head-to-head voting across 54 challenges.

Based on 42 community votes on Rival, Claude 3.7 Thinking Sonnet and Claude Sonnet 4 are closely matched with similar win rates. The better choice depends on your specific use case. Compare their real outputs side-by-side across 54 challenges to decide.

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Claude Sonnet 4 costs $3/M input tokens. Claude Sonnet 4 is $3.00/M cheaper per input. The more expensive model wins 50% of duels, so the premium may be justified by quality.

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. 42 votes have been collected for this pair across 54 challenges. All vote data is part of Rival's open dataset.

Keep exploring

More comparisons

Against the newest arrivals

Claude 3.7 Thinking Sonnet logoGPT-6 Astra Pro logo
Claude 3.7 Thinking Sonnet vs GPT-6 Astra ProLanded Sep 2026
Claude Sonnet 4 logoGPT-6 Astra logo
Claude Sonnet 4 vs GPT-6 AstraLanded Sep 2026
Claude 3.7 Thinking Sonnet logoClaude Fable 5.1 logo
Claude 3.7 Thinking Sonnet vs Claude Fable 5.1Landed Sep 2026
Claude Sonnet 4 logoMuse Spark 1.3 logo
Claude Sonnet 4 vs Muse Spark 1.3Landed Sep 2026
Claude 3.7 Thinking Sonnet logoHy4 Preview logo
Claude 3.7 Thinking Sonnet vs Hy4 PreviewLanded Sep 2026
Claude Sonnet 4 logoGemini 3.8 Flash logo
Claude Sonnet 4 vs Gemini 3.8 FlashLanded Sep 2026
Claude 3.7 Thinking Sonnet logoMuse Spark 1.3 Contributor logo
Claude 3.7 Thinking Sonnet vs Muse Spark 1.3 ContributorLanded Sep 2026
Claude Sonnet 4 logoMercury 2.5 Preview logo
Claude Sonnet 4 vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Claude 3.7 Thinking Sonnet logoClaude 3.7 Sonnet logo
Claude 3.7 Thinking Sonnet vs Claude 3.7 SonnetVersion compare
Claude 3.7 Thinking Sonnet logoClaude Opus 4.6 logo
Claude 3.7 Thinking Sonnet vs Claude Opus 4.6Version compare
Claude Sonnet 4 logoClaude Opus 4 logo
Claude Sonnet 4 vs Claude Opus 4Version compare
Claude Sonnet 4 logoClaude Opus 4.6 logo
Claude Sonnet 4 vs Claude Opus 4.6Version compare
Claude 3.7 Thinking Sonnet logoGLM 5 logo
Claude 3.7 Thinking Sonnet vs GLM 5New provider
Claude 3.7 Thinking Sonnet logoGLM 5 Turbo logo
Claude 3.7 Thinking Sonnet vs GLM 5 TurboNew provider
Claude 3.7 Thinking Sonnet logoGLM 5.1 logo
Claude 3.7 Thinking Sonnet vs GLM 5.1Same size
Claude 3.7 Thinking Sonnet logoGLM 5.2 logo
Claude 3.7 Thinking Sonnet vs GLM 5.2New provider

Model pages

Claude 3.7 Thinking Sonnet logo
Claude 3.7 Thinking Sonnet59 outputs, specs and price
Claude Sonnet 4 logo
Claude Sonnet 459 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