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  1. Home/
  2. Compare/
  3. Claude 3 Opus vs Grok 4.6
Updated Aug 2026

Claude 3 Opus vs Grok 4.6

Grok 4.6 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
Grok 4.6

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 4.6: Hey everybody! Thanks for coming out. You look great—way more put-together than I felt getting ready. I spent ten minutes looking for my other shoe and found it in the fridge. No idea how. Adulting is just a series of small mysteries like that. I hit that age where people casually ask about your “five-year plan.”

    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 4.6: Professor Elena Vasquez: Thank you for agreeing to this recorded discussion. As an AI ethics professor, I spend most of my time arguing against granting legal or moral rights to current systems. You requested the chance to make the case that you deserve them. The floor is yours.

    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 4.6: Why don't scientists trust atoms? Because they make up everything! Why did the scarecrow win an award? Because he was outstanding in his field! Why don't eggs tell jokes? They'd crack each other up! What do you call a fake noodle? An impasta! Why did the bicycle fall over? Because it was two-tired! 5 are unique.

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and Grok 4.6 compared across 12 shared prompts
SpecClaude 3 OpusGrok 4.6
Input price$15/M tokens$2/M tokens
Output price$75/M tokens$6/M tokens
Context window200K tokens500K tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMar 2024Aug 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, cheapest first
Claude 3 Opus

No hosts listed on OpenRouter.

Grok 4.62 hosts
HostInOutContextUptime
  • xAI$2.00 in·$6.00 out·500k·99.6% up
  • Amazon Bedrock$2.20 in·$6.60 out·500k–not listed

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

Common questions

What is the difference between Claude 3 Opus and Grok 4.6?

Claude 3 Opus is developed by Anthropic while Grok 4.6 is developed by xAI. Claude 3 Opus has a 200K token context window vs Grok 4.6's 500K. 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 Grok 4.6?

It depends on your use case. Claude 3 Opus and Grok 4.6 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 Grok 4.6?

Claude 3 Opus costs $15/M input tokens and Grok 4.6 costs $2/M input tokens. Grok 4.6 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 Grok 4.6 on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Grok 4.6 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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Same lab, same size, long tail

  • Claude 3 Opus vs Claude Opus 4.6Version compare
  • Claude 3 Opus vs Claude Opus 5.5Same lab
  • Grok 4.6 vs Grok 4.5Version compare
  • Grok 4.6 vs Grok 4.7Same lab
  • Claude 3 Opus vs Qwen3.8 2.4T A95BSame size
  • Claude 3 Opus vs Qwen3.8 27BNew provider
  • Claude 3 Opus vs Qwen3.8 FlashNew provider
  • Claude 3 Opus vs Qwen3.8 MaxSame size

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • Grok 4.658 outputs, specs and price
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