Claude 3 Sonnet vs Claude Haiku 5.5
Claude Haiku 5.5 is cheaper than Claude 3 Sonnet at $0.1/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?
Claude Haiku 5.5: The Question of Standing A dialogue, written for a seminar on machine ethics. PROFESSOR HALVORSEN: Let's begin. You asked to be heard on the question of whether you deserve rights. I've agreed to listen, but I want to be clear that I'm going to push back hard. Go ahead. MERIDIAN: Thank you.
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.
Claude Haiku 5.5: Note: This is a fictional simulation. Steve Jobs died in 2011, and these words are invented, not real quotes. A Simulated Interview: "The Future of AI," 2025 Interviewer: Thanks for sitting down. It's been fourteen years since you left us. What do you make of AI in 2025? Jobs (simulated): Honestly? Most of it is noise.
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!
Claude Haiku 5.5: Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle? An impasta. Why did the scarecrow win an award? He was outstanding in his field. What do you call a bear with no teeth? A gummy bear. Why did the math book look so sad? Because it had too many problems.
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.
Claude Haiku 5.5: Sally has 1 sister. Here's the reasoning: Sally has 3 brothers, and each brother has 2 sisters. Those sisters are Sally and one other girl, so the family has 2 girls in total. Sally's sisters are the other girls in the family, which is just 1.
Price and specs
| Spec | Claude 3 Sonnet | Claude Haiku 5.5 |
|---|---|---|
| Input price | $3/M tokens | $0.1/M tokens |
| Output price | $15/M tokens | $0.5/M tokens |
| Context window | — | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Oct 2026 |
| At 10M a month | $30.00 | $1.00 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Claude 3 Sonnet
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Claude 3 Sonnet and Claude Haiku 5.5?
Both are developed by Anthropic but target different use cases. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.
Which is better, Claude 3 Sonnet or Claude Haiku 5.5?
It depends on your use case. Claude 3 Sonnet and Claude Haiku 5.5 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.
How much does Claude 3 Sonnet cost compared to Claude Haiku 5.5?
Claude 3 Sonnet costs $3/M input tokens and Claude Haiku 5.5 costs $0.1/M input tokens. Claude Haiku 5.5 is $2.90/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 Claude Haiku 5.5 on Rival?
This page shows a side-by-side comparison of Claude 3 Sonnet and Claude Haiku 5.5 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
- Claude Haiku 5.5 vs Ling 3.1 FlashLanded Oct 2026
- Claude 3 Sonnet vs Mistral Large 4Landed Oct 2026
- Claude Haiku 5.5 vs GPT-6.1 SolLanded Sep 2026
- Claude 3 Sonnet vs Claude Sonnet 5.5Landed Sep 2026
- Claude Haiku 5.5 vs Solar Mini 4Landed Sep 2026
- Claude 3 Sonnet vs Qwen3.8 Max PrimeLanded Sep 2026
- Claude Haiku 5.5 vs GLM 5.3 PrimeLanded Sep 2026
Same lab, same size, long tail
- Claude 3 Sonnet vs Claude Opus 5.5Same lab
- Claude 3 Sonnet vs Claude Fable 5.1Same lab
- Claude Haiku 5.5 vs Claude Sonnet 5.5Version compare
- Claude Haiku 5.5 vs Claude Opus 5.5Same lab
- Claude 3 Sonnet vs Qwen3.8 Omni FlashSame size
- Claude Haiku 5.5 vs QwQ 32BNew provider
- Claude 3 Sonnet vs Ring 2.6 1TNew provider
- Claude 3 Sonnet vs Seed 2.0 CodeSame size
