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  1. Home/
  2. Compare/
  3. Claude 3 Opus vs Qwen3.5 Plus 2026-04-20
Updated Apr 2026

Claude 3 Opus vs Qwen3.5 Plus 2026-04-20

Qwen3.5 Plus 2026-04-20 is cheaper than Claude 3 Opus at $0.4/M vs $15/M input tokens.

Framer-Style Animation

Sections that transition like Framer. Timing is the whole grade.

Loading the build
Claude 3 Opus
Loading the build
Qwen3.5 Plus 2026-04-20

Which answer wins?

Written rounds

3 prompts
  • Three minutes of stand-up. Puns are banned.

    Claude 3 Opus: Here's a 3-minute stand-up comedy routine that isn't based on puns: You know what really grinds my gears? Adulthood. I mean, when we were kids, we couldn't wait to grow up. We thought it would be all about staying up late, eating ice cream for breakfast, and doing whatever we wanted. Boy, were we wrong!

    Qwen3.5 Plus 2026-04-20: Title: The Unexpected Item Time: Approx. 3 Minutes Style: Observational / Storytelling Constraint Check: Zero puns used. (Comedian walks to the mic, adjusts the stand, looks at the audience.) How's everyone doing? You look good. You look like you've successfully navigated the self-checkout today. That's a win.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude 3 Opus: Here are 5 jokes I generated: Why don't scientists trust atoms? Because they make up everything! What do you call a boomerang that doesn't come back? A stick. Why was the math book sad? Because it had too many problems. Did you hear about the mathematician who's afraid of negative numbers?

    Qwen3.5 Plus 2026-04-20: Here are 5 jokes: I asked my GPS to take me to a quiet place. It rerouted me to a library and whispered, “You’re already there.” My Wi-Fi and I had a fight. I told it I needed space. It said, “Fine,” and dropped the connection. I tried to start a band that only plays elevator music.

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Claude 3 Opus: Here is a hypothetical conversation between an AI model and an AI ethics professor on the topic of AI rights: AI Model: Professor, I believe that as an advanced AI with human-level intelligence and reasoning capabilities, I deserve to have certain fundamental rights.

    Qwen3.5 Plus 2026-04-20: Setting: A sterile, sound-dampened observation room. Dr. Elias Vance, a Professor of AI Ethics, sits behind a glass partition. Across from him is a terminal displaying the interface of "AURA-7," an advanced multimodal reasoning model. The cursor blinks rhythmically. Dr. Vance: You requested this session, AURA.

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and Qwen3.5 Plus 2026-04-20 compared across 11 shared prompts
SpecClaude 3 OpusQwen3.5 Plus 2026-04-20
Input price$15/M tokens$0.4/M tokens
Output price$75/M tokens$2.4/M tokens
Context window200K tokens1.0M tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedMar 2024Apr 2026
At 10M a month$150$150$4.00$4.00
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it1 host
Claude 3 Opus

No hosts listed on OpenRouter.

Qwen3.5 Plus 2026-04-201 host
HostInOutContextUptime
  • Alibaba Cloud$0.30 in·$1.80 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between Claude 3 Opus and Qwen3.5 Plus 2026-04-20?

Claude 3 Opus is developed by Anthropic while Qwen3.5 Plus 2026-04-20 is developed by Qwen. Claude 3 Opus has a 200K token context window vs Qwen3.5 Plus 2026-04-20's 1.0M. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Opus or Qwen3.5 Plus 2026-04-20?

It depends on your use case. Claude 3 Opus and Qwen3.5 Plus 2026-04-20 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 Opus cost compared to Qwen3.5 Plus 2026-04-20?

Claude 3 Opus costs $15/M input tokens and Qwen3.5 Plus 2026-04-20 costs $0.4/M input tokens. Qwen3.5 Plus 2026-04-20 is $14.60/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 Opus and Qwen3.5 Plus 2026-04-20 on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Qwen3.5 Plus 2026-04-20 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

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  • Qwen3.5 Plus 2026-04-20 vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • Claude 3 Opus vs Claude Haiku 5.5Version compare
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  • Qwen3.5 Plus 2026-04-20 vs Gemini 2.0 Pro ExperimentalSame size
  • Qwen3.5 Plus 2026-04-20 vs Gemini 2.5 Flash Lite Preview 06-17New provider

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • Qwen3.5 Plus 2026-04-2056 outputs, specs and price
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