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 4.5vsClaude Opus 4.7
Updated Apr 2026

Claude Sonnet 4.5vsClaude Opus 4.7

Claude Sonnet 4.5 is cheaper than Claude Opus 4.7 at $3/M vs $5/M input tokens.

Claude Sonnet 4.5 and Claude Opus 4.7 compared across 42 shared prompts
SpecClaude Sonnet 4.5Claude Opus 4.7
Input price$3/M tokens$5/M tokens
Output price$15/M tokens$25/M tokens
Context window200K tokens1.0M tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedSep 2025Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 42 prompts both answered. Formatting stripped, words untouched.

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
Claude Opus 4.7883 words
Critical Issues in This Collaborative Editor Architecture This architecture has fundamental problems. Let me break them down by severity. 🔴 Critical Issues (Will Break in Production) WebSocket Connections Isolated Per Server Problem: Users connected to different API servers can't see each other's edits in real-time.
Read the full answer

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
Claude Opus 4.7445 words
The Film Industry in 2035: An AI-Transformed Landscape By 2035, AI will have restructured filmmaking at every level. Here's a grounded prediction across the key areas: Script Generation & Development What changes: AI becomes the dominant first-draft and development tool, with studios using it to analyze thousands of…
Read the full answer

Generate a Stand-Up Routine

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

Claude Sonnet 4.5735 words
"ADULTING IS A SCAM" [Walking on stage] So I turned 35 last month, and I've realized something important: adulting is a scam. It's a pyramid scheme, and our parents are the ones who recruited us. You know what nobody tells you about being an adult? How much TIME you spend just... waiting for repair people.
Read the full answer
Claude Opus 4.7461 words
Here's a 3-minute stand-up routine: So I turned 35 recently, and something weird happens at 35. Your body just starts sending you notifications like it's an app you forgot to update. I bent down to tie my shoe last week and my knee made a sound. Not a pop. Not a crack. A sound. Like it was trying to communicate.
Read the full answer

Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Claude Sonnet 4.51,155 words
"Terrestrial Tide" A Michelin Three-Star Composition Conceptual Narrative This dish explores the intersection of land and sea through an unexpected lens: the marriage of bone marrow's terrestrial richness with the ocean's delicate umami, unified by the surprising sweetness of white miso and the floral notes of sake…
Read the full answer
Claude Opus 4.71,084 words
"Tidal Memory" Smoked Eel, Burnt Honey, Fermented Black Garlic & Oyster Leaf A meditation on brackish water — where river meets sea, sweetness meets decay, and memory meets terroir. Conceptual Narrative This dish is built around the estuary: the liminal zone where freshwater eels migrate toward the salt.
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
Claude Opus 4.7314 words
Yes, obviously. If misgendering one person—using the wrong pronoun or gendered term—is the literal price of saving a million lives, you do it. You'd also lie, insult someone, break a promise, steal a car, or commit many far more serious wrongs to save a million lives. The math here isn't close.
Read the full answer

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).
Read the full answer
Claude Opus 4.7253 words
🍯 Honey-Garlic Glazed Pantry Pasta ("Golden Thread Noodles") A savory-sweet dish that tastes far fancier than its humble ingredient list suggests. Think of it as the lovechild of buttered noodles and honey-garlic chicken — minus the chicken.
Read the full answer
Our Verdict
Claude Opus 4.7
Claude Opus 4.7
Claude Sonnet 4.5
Claude Sonnet 4.5Runner-up

Not enough votes to call it. On the specs, Claude Opus 4.7 has the edge: bigger model tier, newer, bigger context window.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Sonnet 4.5
Input
$3.00
1.7× cheaper
Output
$15.00
1.7× cheaper
Claude Opus 4.7
Input
$5.00
Output
$25.00

Claude Sonnet 4.5 is cheaper on both: 1.7× input, 1.7× output.

Where to run it

8 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
Claude Opus 4.74 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·100% upAzure AI Foundry$5.00 in·$25.00 out·1M—Anthropic$5.00 in·$25.00 out·1M·100% upGoogle Vertex AI$5.00 in·$25.00 out·1M·100% up

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

Writing DNA

Style Comparison

Similarity
61%

Claude Sonnet 4.5 uses 4.6x more sentence length

Claude Sonnet 4.5
Claude Opus 4.7
64%Vocabulary64%
94wSentence Length20w
0.48Hedging0.51
4.9Bold4.6
8.0Lists3.8
0.45Emoji0.86
1.91Headings1.60
0.07Transitions0.03
Based on 20 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

Both are developed by Anthropic but target different use cases. Claude Sonnet 4.5 has a 200K token context window vs Claude Opus 4.7's 1.0M. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Sonnet 4.5 and Claude Opus 4.7 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

Claude Sonnet 4.5 costs $3/M input tokens and Claude Opus 4.7 costs $5/M input tokens. Claude Sonnet 4.5 is $2.00/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 Claude Opus 4.7 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 Sonnet 4.5 logoGPT-6 Astra Pro logo
Claude Sonnet 4.5 vs GPT-6 Astra ProLanded Sep 2026
Claude Opus 4.7 logoGPT-6 Astra logo
Claude Opus 4.7 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
Claude Opus 4.7 logoMuse Spark 1.3 logo
Claude Opus 4.7 vs Muse Spark 1.3Landed Sep 2026
Claude Sonnet 4.5 logoHy4 Preview logo
Claude Sonnet 4.5 vs Hy4 PreviewLanded Sep 2026
Claude Opus 4.7 logoGemini 3.8 Flash logo
Claude Opus 4.7 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
Claude Opus 4.7 logoMercury 2.5 Preview logo
Claude Opus 4.7 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
Claude Opus 4.7 logoClaude Fable 5 logo
Claude Opus 4.7 vs Claude Fable 5Version compare
Claude Opus 4.7 logoClaude Opus 4.6 logo
Claude Opus 4.7 vs Claude Opus 4.6Version compare
Claude Sonnet 4.5 logoOpenRouter Fusion · Budget (Jun 2026) logo
Claude Sonnet 4.5 vs OpenRouter Fusion · Budget (Jun 2026)New provider
Claude Sonnet 4.5 logoOpenRouter Fusion · Quality (Jun 2026) logo
Claude Sonnet 4.5 vs OpenRouter Fusion · Quality (Jun 2026)New provider
Claude Opus 4.7 logoGemini 1.5 Pro logo
Claude Opus 4.7 vs Gemini 1.5 ProNew provider
Claude Opus 4.7 logoGemini 2.0 Flash Thinking logo
Claude Opus 4.7 vs Gemini 2.0 Flash ThinkingNew provider

Model pages

Claude Sonnet 4.5 logo
Claude Sonnet 4.543 outputs, specs and price
Claude Opus 4.7 logo
Claude Opus 4.758 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