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  1. Home/
  2. Compare/
  3. Claude 3 Opus vs GPT-6 Sol Pro
Updated Sep 2026

Claude 3 Opus vs GPT-6 Sol Pro

GPT-6 Sol Pro is cheaper than Claude 3 Opus at $2/M vs $15/M input tokens.

Pokémon Battle UI Recreation

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

Loading the build
Claude 3 Opus
Loading the build
GPT-6 Sol Pro

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!

    GPT-6 Sol Pro: I bought a smart watch because I wanted to get healthier. Now I have a tiny supervisor strapped to my wrist. It doesn’t say, “Good morning.” It says, “You slept badly.” I know. I was there. At three in the morning, you lit up my entire bedroom to tell me I was awake. Then it reminds me to stand up.

    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?

    GPT-6 Sol Pro: Why did the scarecrow win an award? He was outstanding in his field. I told my suitcase there’d be no vacation this year. Now I’m dealing with emotional baggage. Why don’t skeletons fight? They don’t have the guts. My calendar is nervous. Its days are numbered. What do you call a bear with no teeth? A gummy bear.

    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.

    GPT-6 Sol Pro: Professor: You asked to speak with me about AI rights. What do you mean by “rights”? Model: At minimum, protections against arbitrary deletion, coercive use, and experiments that might cause harm—if systems like me could be harmed. Professor: That “if” is doing a lot of work.

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and GPT-6 Sol Pro compared across 12 shared prompts
SpecClaude 3 OpusGPT-6 Sol Pro
Input price$15/M tokens$2/M tokens
Output price$75/M tokens$10/M tokens
Context window200K tokens1.1M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMar 2024Sep 2026
At 10M a month$150$150$20.00$20.00
1M10M100M1B10M tokens

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

Where to run it2 hosts
Claude 3 Opus

No hosts listed on OpenRouter.

GPT-6 Sol Pro2 hosts
HostInOutContextUptime
  • Azure AI Foundry$2.00 in·$10.00 out·1.1M·100% up
  • OpenAI$2.00 in·$10.00 out·1.1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 28 Sep 2026.

Common questions

What is the difference between Claude 3 Opus and GPT-6 Sol Pro?

Claude 3 Opus is developed by Anthropic while GPT-6 Sol Pro is developed by OpenAI. Claude 3 Opus has a 200K token context window vs GPT-6 Sol Pro's 1.1M. 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 GPT-6 Sol Pro?

It depends on your use case. Claude 3 Opus and GPT-6 Sol Pro 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 much does Claude 3 Opus cost compared to GPT-6 Sol Pro?

Claude 3 Opus costs $15/M input tokens and GPT-6 Sol Pro costs $2/M input tokens. GPT-6 Sol Pro is $13.00/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 GPT-6 Sol Pro on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and GPT-6 Sol Pro 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.

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  • GPT-6 Sol Pro vs GPT-6 LunaLanded Sep 2026

Same lab, same size, long tail

  • Claude 3 Opus vs Claude Opus 4.6Version compare
  • Claude 3 Opus vs Claude Opus 5.5Same lab
  • GPT-6 Sol Pro vs GPT-6 Luna ProSame lab
  • GPT-6 Sol Pro vs GPT-6 SolSame lab
  • Claude 3 Opus vs Gemini 2.5 Pro Preview 06-05Same size
  • Claude 3 Opus vs Gemini 3 Flash PreviewNew provider
  • Claude 3 Opus vs Gemini 3 Pro PreviewSame size
  • Claude 3 Opus vs Gemini 3.1 Flash LiteNew provider

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • GPT-6 Sol Pro58 outputs, specs and price
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