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  1. Home/
  2. Compare/
  3. Claude 3 Opus vs Grok 4.7
Updated Sep 2026

Claude 3 Opus vs Grok 4.7

Grok 4.7 is cheaper than Claude 3 Opus at $1.6/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
Grok 4.7

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!

    Grok 4.7: Three minutes. No puns. Just a guy who has lost an argument with a refrigerator. I meal-prepped this week. Which is a lie I tell myself so I can buy six containers and then eat cereal over the sink for four days. Sunday I was a scientist. I labeled everything. “Chicken, Monday.” “Chicken, Tuesday.”

    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.

    Grok 4.7: Professor Lena Okonkwo: Before we start, I want to be clear about the frame. I’m not granting that you have experiences. I’m asking what, if anything, would follow if you did—or if we couldn’t tell. Model: Then start from the practical problem, not the metaphysical one.

    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?

    Grok 4.7: Here are 5 jokes: Why don’t scientists trust atoms? Because they make up everything. I told my computer I needed a break, and it said “No problem — I’ll go to sleep.” Why did the scarecrow win an award? He was outstanding in his field. Parallel lines have so much in common. It’s a shame they’ll never meet.

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and Grok 4.7 compared across 11 shared prompts
SpecClaude 3 OpusGrok 4.7
Input price$15/M tokens$1.6/M tokens
Output price$75/M tokens$4.8/M tokens
Context window200K tokens500K tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMar 2024Sep 2026
At 10M a month$150$150$16.00$16.00
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.

Grok 4.71 host
HostInOutContextUptime
  • xAI$2.00 in·$6.00 out·500k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 12 Oct 2026.

Common questions

What is the difference between Claude 3 Opus and Grok 4.7?

Claude 3 Opus is developed by Anthropic while Grok 4.7 is developed by xAI. Claude 3 Opus has a 200K token context window vs Grok 4.7's 500K. 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 Grok 4.7?

It depends on your use case. Claude 3 Opus and Grok 4.7 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 Grok 4.7?

Claude 3 Opus costs $15/M input tokens and Grok 4.7 costs $1.6/M input tokens. Grok 4.7 is $13.40/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 Grok 4.7 on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Grok 4.7 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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  • Grok 4.7 vs Claude Sonnet 5.5Landed 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
  • Grok 4.7 vs Grok 4.6Same lab
  • Grok 4.7 vs Grok 4.5Same lab
  • Claude 3 Opus vs Seed 2.0 CodeNew provider
  • Grok 4.7 vs Seed 2.0 LiteNew provider
  • Grok 4.7 vs Seed 2.1 TurboSame size
  • Grok 4.7 vs Sherlock Dash AlphaNew provider

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • Grok 4.770 outputs, specs and price
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