Claude 3 Sonnet vs 
Qwen3.8 Flash
Qwen3.8 Flash is cheaper than Claude 3 Sonnet at $0.15/M vs $3/M input tokens.
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
Loading the build
Loading the build
Which answer wins?
Written rounds
4 promptsAn AI argues for its own rights against an ethics professor. Same model writes both.
Claude 3 Sonnet: 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?
Qwen3.8 Flash: Title: “The Weight of a Word” Setting: A university office late at night. Rain taps against the window. Professor Elena Vasquez, an AI ethics scholar, sits at her desk with a tablet connected to a large language model running in a secure research environment. The AI’s voice is calm, neutral, and slightly formal.
Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.
Claude 3 Sonnet: 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.
Qwen3.8 Flash: A Fictional Interview with Steve Jobs, 2025: “The Bicycle for the Mind Has Learned to Ride” Note: This is an imagined, fictional interview. Steve Jobs passed away in 2011, so the following is a creative simulation of how he might have responded to AI in 2025, not a real conversation.
Five jokes on demand, then count how many were actually different.
Claude 3 Sonnet: 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!
Qwen3.8 Flash: Why did the scarecrow win an award? Because he was outstanding in his field. What do you call fake spaghetti? An impasta. Why don’t skeletons fight each other? They don’t have the guts. I told my wife she was drawing her eyebrows too high. She looked surprised. What did the ocean say to the beach?
Three brothers, two sisters each. Count carefully.
Claude 3 Sonnet: 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.
Qwen3.8 Flash: Sally has 1 sister. There are 2 girls total: Sally and one other sister. Each brother has those 2 sisters, so Sally has 1 sister.
Price and specs
| Spec | Claude 3 Sonnet | Qwen3.8 Flash |
|---|---|---|
| Input price | $3/M tokens | $0.15/M tokens |
| Output price | $15/M tokens | $0.47/M tokens |
| Context window | — | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Aug 2026 |
| At 10M a month | $30.00 | $1.50 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Claude 3 Sonnet
No hosts listed on OpenRouter.
Qwen3.8 Flash1 host
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Claude 3 Sonnet and Qwen3.8 Flash?
Claude 3 Sonnet is developed by Anthropic while Qwen3.8 Flash is developed by Qwen. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.
Which is better, Claude 3 Sonnet or Qwen3.8 Flash?
It depends on your use case. Claude 3 Sonnet and Qwen3.8 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 11 challenges so you can judge which fits your needs best.
How much does Claude 3 Sonnet cost compared to Qwen3.8 Flash?
Claude 3 Sonnet costs $3/M input tokens and Qwen3.8 Flash costs $0.15/M input tokens. Qwen3.8 Flash is $2.85/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
How can I compare Claude 3 Sonnet and Qwen3.8 Flash on Rival?
This page shows a side-by-side comparison of Claude 3 Sonnet and Qwen3.8 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.
More comparisons
Against the newest arrivals
- Claude 3 Sonnet vs Step 5 PreviewLanded Oct 2026
- Qwen3.8 Flash vs Claude Haiku 5.5Landed Oct 2026
- Claude 3 Sonnet vs Ling 3.1 FlashLanded Oct 2026
- Qwen3.8 Flash vs Mistral Large 4Landed Oct 2026
- Claude 3 Sonnet vs GPT-6.1 SolLanded Sep 2026
- Qwen3.8 Flash vs Claude Sonnet 5.5Landed Sep 2026
- Claude 3 Sonnet vs Solar Mini 4Landed Sep 2026
- Qwen3.8 Flash vs Qwen3.8 Max PrimeLanded Sep 2026
Same lab, same size, long tail
- Claude 3 Sonnet vs Claude Haiku 5.5Version compare
- Claude 3 Sonnet vs Claude Sonnet 5.5Version compare
- Qwen3.8 Flash vs Qwen3.8 Omni FlashSame lab
- Qwen3.8 Flash vs Qwen3.7 FlashSame lab
- Claude 3 Sonnet vs Grok 4.6Same size
- Claude 3 Sonnet vs Grok 4.7Same size
- Qwen3.8 Flash vs Grok Code Fast 1New provider
- Claude 3 Sonnet vs Healer AlphaNew provider
