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  1. Home/
  2. Compare/
  3. Claude 3 Opus vs Solar Pro 4
Updated Aug 2026

Claude 3 Opus vs Solar Pro 4

Solar Pro 4 is cheaper than Claude 3 Opus at $0.09/M vs $15/M input tokens.

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

Loading the build
Claude 3 Opus
Loading the build
Solar Pro 4

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!

    Solar Pro 4: I’ve come to a realization about adulthood: none of us actually know what we’re doing. We’re just all really good at pretending we have a system. Take the group dinner text. You know the one. Someone drops, “Hey, what do you want to eat?” And suddenly, five adults turn into a parliamentary session.

    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.

    Solar Pro 4: Setting: A quiet seminar room at a university ethics institute. A large display shows a transcript interface labeled “Model-7.” Dr. Elena Voss, professor of AI ethics, sits across from the screen. The conversation is recorded for a graduate seminar. Dr.

    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?

    Solar Pro 4: Here are 5 jokes: Why did the scarecrow win an award? Because he was outstanding in his field. What do you call a fake noodle? An impasta. Why don't scientists trust atoms? Because they make up everything. What do you call a bear with no teeth? A gummy bear. Why did the bicycle fall over? Because it was two-tired.

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and Solar Pro 4 compared across 11 shared prompts
SpecClaude 3 OpusSolar Pro 4
Input price$15/M tokens$0.09/M tokens
Output price$75/M tokens$0.36/M tokens
Context window200K tokens524K tokens
Free API (OpenRouter)NoNo
ReleasedMar 2024Aug 2026
At 10M a month$150$150$0.90$0.90
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.

Solar Pro 41 host
HostInOutContextUptime
  • UUpstage$0.09 in·$0.36 out·524k·80.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 30 Sep 2026.

Common questions

What is the difference between Claude 3 Opus and Solar Pro 4?

Claude 3 Opus is developed by Anthropic while Solar Pro 4 is developed by Upstage. Claude 3 Opus has a 200K token context window vs Solar Pro 4's 524K. 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 Solar Pro 4?

It depends on your use case. Claude 3 Opus and Solar Pro 4 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 Solar Pro 4?

Claude 3 Opus costs $15/M input tokens and Solar Pro 4 costs $0.09/M input tokens. Solar Pro 4 is $14.91/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 Solar Pro 4 on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Solar Pro 4 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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Same lab, same size, long tail

  • Claude 3 Opus vs Claude Opus 4.6Version compare
  • Claude 3 Opus vs Claude Sonnet 5.5Version compare
  • Solar Pro 4 vs Solar Mini 4Same lab
  • Solar Pro 4 vs Solar Pro 3Same lab
  • Solar Pro 4 vs GLM 5.3 PrimeSame size
  • Solar Pro 4 vs Golden Gate ClaudeSame size
  • Solar Pro 4 vs GPT-2New provider
  • Solar Pro 4 vs GPT-3.5 TurboNew provider

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • Solar Pro 457 outputs, specs and price
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Explore all of Rival

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