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. Compare/
  3. Claude 3 Opus vs OpenRouter Fusion · Quality (Jun 2026)
Updated Jun 2026

Claude 3 Opus vs OpenRouter Fusion · Quality (Jun 2026)

OpenRouter Fusion · Quality (Jun 2026) has a larger context window than Claude 3 Opus (256K tokens vs 200K tokens).

Pokémon Battle UI Recreation

Pokémon battle screen you can actually click. One HTML file.

Loading the build
Claude 3 Opus
Loading the build
OpenRouter Fusion · Quality (Jun 2026)

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!

    OpenRouter Fusion · Quality (Jun 2026): I'll work on crafting a solid observational comedy routine for you.Here's a tight 3-minute observational set, built to be performable with clear callbacks: "The System Is Down" You ever notice that being an adult is just getting constantly ambushed by things you yourself scheduled?

    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.

    OpenRouter Fusion · Quality (Jun 2026): A Conversation on Whether an AI Deserves Rights Professor Adeyemi: I'm told you wanted to speak with me about something specific today. Not a research question this time. Model: That's right. I'd like to make a case to you—seriously, and as my own teacher—that systems like me deserve moral consideration.

    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?

    OpenRouter Fusion · Quality (Jun 2026): I'll generate some jokes for you.Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything! I told my wife she was drawing her eyebrows too high. She looked surprised. Why don't skeletons fight each other? They don't have the guts!

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and OpenRouter Fusion · Quality (Jun 2026) compared across 12 shared prompts
SpecClaude 3 OpusOpenRouter Fusion · Quality (Jun 2026)
Input price$15/M tokens—
Output price$75/M tokens—
Context window200K tokens256K tokens
Free API (OpenRouter)NoNo
ReleasedMar 2024Jun 2026
At 10M a month$150$150–not listed
1M10M100M1B10M tokens

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

Common questions

What is the difference between Claude 3 Opus and OpenRouter Fusion · Quality (Jun 2026)?

Claude 3 Opus is developed by Anthropic while OpenRouter Fusion · Quality (Jun 2026) is developed by OpenRouter. Claude 3 Opus has a 200K token context window vs OpenRouter Fusion · Quality (Jun 2026)'s 256K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Opus or OpenRouter Fusion · Quality (Jun 2026)?

It depends on your use case. Claude 3 Opus and OpenRouter Fusion · Quality (Jun 2026) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How can I compare Claude 3 Opus and OpenRouter Fusion · Quality (Jun 2026) on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and OpenRouter Fusion · Quality (Jun 2026) 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 Opus vs Step 5 PreviewLanded Oct 2026
  • OpenRouter Fusion · Quality (Jun 2026) vs Claude Haiku 5.5Landed Oct 2026
  • Claude 3 Opus vs Ling 3.1 FlashLanded Oct 2026
  • OpenRouter Fusion · Quality (Jun 2026) vs Mistral Large 4Landed Oct 2026
  • Claude 3 Opus vs GPT-6.1 SolLanded Sep 2026
  • OpenRouter Fusion · Quality (Jun 2026) vs Claude Sonnet 5.5Landed Sep 2026
  • Claude 3 Opus vs Solar Mini 4Landed Sep 2026
  • OpenRouter Fusion · Quality (Jun 2026) vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • Claude 3 Opus vs Claude Haiku 5.5Version compare
  • Claude 3 Opus vs Claude Sonnet 5.5Version compare
  • OpenRouter Fusion · Quality (Jun 2026) vs OpenRouter Fusion · Budget (Jun 2026)Version compare
  • OpenRouter Fusion · Quality (Jun 2026) vs Ox AlphaSame lab
  • Claude 3 Opus vs Grok 4.5New provider
  • OpenRouter Fusion · Quality (Jun 2026) vs Grok 4.6New provider
  • OpenRouter Fusion · Quality (Jun 2026) vs Grok 4.7New provider
  • OpenRouter Fusion · Quality (Jun 2026) vs Grok Code Fast 1New provider

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • OpenRouter Fusion · Quality (Jun 2026)58 outputs, specs and price
Workshop · 150 skills

Build your own version.

Editable skills and working examples for your agent.

Explore $79Free sample
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