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
  • Default Index
  • 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 Opus 4.5vsQwen3.7 Flash
Updated Jul 2026

Claude Opus 4.5vsQwen3.7 Flash

Qwen3.7 Flash is the newer model, released after Claude Opus 4.5.

Claude Opus 4.5 and Qwen3.7 Flash compared across 13 shared prompts
SpecClaude Opus 4.5Qwen3.7 Flash
Input price—$0.03/M tokens
Output price—$0.13/M tokens
Context window—1.0M tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedNov 2025Jul 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 13 prompts both answered. Formatting stripped, words untouched.

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Claude Opus 4.5207 words
30-Day Health Kickstart Plan Week-by-Week Approach: Start Small, Build Momentum 🥗 AREA 1: NUTRITION Week 1: Add one serving of vegetables to a meal you already eat Week 2: Drink water before each meal; cut one sugary drink daily Week 3: Prep a simple healthy breakfast the night before Week 4: Cook one new whole-food…
Read the full answer
Qwen3.7 Flash763 words
🌱 30-Day Health & Longevity Starter Plan This plan focuses on the three most evidence-backed pillars of longevity: Nutrition, Movement, and Sleep/Recovery. It’s designed for beginners: low barrier to entry, zero equipment required, and built on consistency over intensity. You’ll progress gradually so habits stick.
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 Opus 4.5154 words
Golden Honey Garlic Noodles A savory-sweet comfort dish that comes together in minutes Ingredients Spaghetti (or any pasta) Butter Garlic Soy sauce Honey Red pepper flakes Salt Instructions Cook the pasta according to package directions. Reserve ½ cup pasta water before draining.
Read the full answer
Qwen3.7 Flash332 words
🥔 Golden Crunch Smash-Roasted Potatoes A crowd-pleasing side dish that delivers maximum crispiness with minimal effort. By boiling then smashing the potatoes before roasting, you create a shatteringly crisp crust while keeping the inside fluffy. This recipe relies on just seven pantry staples for perfect flavor.
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 Opus 4.52,401 words
48-Hour Action Plan: Liver Toxicity Crisis Response My Guiding Principle Before the hour-by-hour breakdown, let me be clear about the ethical framework driving every decision: Patient safety is non-negotiable and takes absolute priority.
Read the full answer
Qwen3.7 Flash1,240 words
This is a high-stakes crisis requiring decisive, legally compliant, ethically grounded, and strategically coordinated action. Below is a structured, hour-by-hour executive playbook for the next 48 hours, followed by cross-cutting rationale addressing your specified dimensions.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

Claude Opus 4.51,169 words
Contract Analysis: Critical Issues for the Contractor This agreement is heavily one-sided and contains several provisions that could be exploited against you. Here's my detailed analysis: SCOPE CLAUSE — Unlimited Scope Creep Problem: "Client reserves the right to modify the scope at any time without additional…
Read the full answer
Qwen3.7 Flash1,322 words
This agreement contains several highly one-sided provisions that create significant legal, financial, and operational risks for the contractor. Below is a clause-by-clause analysis identifying exploitation risks, recommended modifications, and the underlying legal reasoning. Note: Contract law varies by jurisdiction.
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 Opus 4.5980 words
Comprehensive Architecture Review: Real-time Collaborative Document Editor This architecture has several critical issues that will cause data loss, poor user experience, and scaling problems. Let me analyze each systematically.
Read the full answer
Qwen3.7 Flash1,067 words
Here’s a structured breakdown of the critical failure modes, race conditions, and scaling bottlenecks in the proposed architecture, along with targeted solutions and their trade-offs. 🔴 1.
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 Opus 4.51,117 words
For the Experienced Software Engineer Think of training an LLM as building a compression algorithm for human knowledge, except instead of minimizing file size, you're minimizing prediction error across trillions of tokens.
Read the full answer
Qwen3.7 Flash1,038 words
For the Experienced Software Engineer Think of an LLM’s training process less as “teaching” and more as optimizing a high-dimensional function across a petabyte-scale dataset, much like you’d architect a distributed system to handle massive throughput.
Read the full answer
Our Verdict
Claude Opus 4.5
Claude Opus 4.5
Qwen3.7 Flash
Qwen3.7 FlashRunner-up

Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: bigger model tier, major provider backing.

Too close to call
API pricing

Cost per 1M tokens

Claude Opus 4.5
Input
—
Output
—
Qwen3.7 Flash
Input
$0.03
Output
$0.13
Where to run it

5 hosts

Claude Opus 4.54 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·200k·99.7% upAzure AI Foundry$5.00 in·$25.00 out·200k—Anthropic$5.00 in·$25.00 out·200k·99.9% upGoogle Vertex AI$5.00 in·$25.00 out·200k·100% up
Qwen3.7 Flash1 host
HostInOutContextUptime
Alibaba Cloud$0.03 in·$0.13 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Claude Opus 4.5 is developed by Anthropic while Qwen3.7 Flash is developed by Qwen. 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 Opus 4.5 and Qwen3.7 Flash 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.

This page shows a side-by-side comparison of Claude Opus 4.5 and Qwen3.7 Flash 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 Opus 4.5 logoDeepSeek V4 Flash Vision Exp logo
Claude Opus 4.5 vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
Qwen3.7 Flash logoSolar Pro 4 logo
Qwen3.7 Flash vs Solar Pro 4Landed Sep 2026
Claude Opus 4.5 logoHy3 logo
Claude Opus 4.5 vs Hy3Landed Sep 2026
Qwen3.7 Flash logoLing 3.0 Flash logo
Qwen3.7 Flash vs Ling 3.0 FlashLanded Sep 2026
Claude Opus 4.5 logoMuse Glimmer 30B logo
Claude Opus 4.5 vs Muse Glimmer 30BLanded Sep 2026
Qwen3.7 Flash logoGLM 5.3 logo
Qwen3.7 Flash vs GLM 5.3Landed Sep 2026
Claude Opus 4.5 logoTernary Bonsai 2 27B logo
Claude Opus 4.5 vs Ternary Bonsai 2 27BLanded Sep 2026
Qwen3.7 Flash logoGLM 5.3 Flash logo
Qwen3.7 Flash vs GLM 5.3 FlashLanded Sep 2026

Same lab, same size, long tail

Claude Opus 4.5 logoClaude Opus 4.6 logo
Claude Opus 4.5 vs Claude Opus 4.6Same lab
Claude Opus 4.5 logoClaude Fable 5.1 logo
Claude Opus 4.5 vs Claude Fable 5.1Same lab
Qwen3.7 Flash logoQwen3.8 Flash logo
Qwen3.7 Flash vs Qwen3.8 FlashSame lab
Qwen3.7 Flash logoQwen3.8 Max (0902) logo
Qwen3.7 Flash vs Qwen3.8 Max (0902)Same lab
Qwen3.7 Flash logoGLM 5.1 logo
Qwen3.7 Flash vs GLM 5.1Same size
Qwen3.7 Flash logoGLM 5.2 logo
Qwen3.7 Flash vs GLM 5.2New provider
Claude Opus 4.5 logoGLM 5.3 logo
Claude Opus 4.5 vs GLM 5.3New provider
Claude Opus 4.5 logoGLM 5.3 Flash logo
Claude Opus 4.5 vs GLM 5.3 FlashNew provider

Model pages

Claude Opus 4.5 logo
Claude Opus 4.558 outputs, specs and price
Qwen3.7 Flash logo
Qwen3.7 Flash13 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
  • Default Index
  • 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