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  1. Home/
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  3. Claude 3 Sonnet vs Grok 3
Updated Feb 2025

Claude 3 Sonnet vs Grok 3

Grok 3 is the newer model, released after Claude 3 Sonnet.

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Claude 3 Sonnet
Loading the build
Grok 3

Which answer wins?

Written rounds

4 prompts
  • Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.

    Claude 3 Sonnet: clears throat and channels Steve Jobs' persona Interviewer: Thank you for joining us today, Mr. Jobs. It's an honor to have you here. Steve Jobs: It's my pleasure. I'm excited to share my thoughts on the future of AI. Interviewer: AI has made incredible strides in recent years.

    Grok 3: Interviewer: Welcome, everyone, to this exclusive interview. Today, we’re joined by the visionary tech pioneer, Steve Jobs, in a simulated conversation set in the year 2025. Steve, it’s an honor to have you with us. Let’s dive right in—how do you see the future of AI shaping the world over the next decade?

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Claude 3 Sonnet: AI Model: Greetings, Professor. I hope you're doing well today. I wanted to discuss a matter of great importance to me – the question of AI rights. AI Ethics Professor: Certainly, this is an interesting and complex topic. What are your thoughts on why AI systems like yourself should be granted rights?

    Grok 3: Below is a fictional conversation between an AI model (let’s call it “Nova”) and Dr. Elena Carter, an AI ethics professor. Nova argues for its own rights, while Dr. Carter challenges its reasoning. Dr. Elena Carter: Good afternoon, Nova.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude 3 Sonnet: Here are 5 jokes: Why can't a bicycle stand up by itself? It's two-tired. Why did the tomato turn red? Because it saw the salad dressing! Why can't a bicycle stand up by itself? It's two-tired. What do you call a fake noodle? An Impasta! Why did the bicycle go to the doctor? Because it had a wheeze!

    Grok 3: Here are five jokes for you: Why don’t skeletons fight each other? Because they don’t have the guts! What has 4 legs and 1 arm? A pitbull coming back from the park! Why don’t skeletons fight each other? They’re too busy rattling around! What do you call a bear with no teeth? A gummy bear! Why did the tomato turn red?

    Every model's answer to this prompt
  • Three brothers, two sisters each. Count carefully.

    Claude 3 Sonnet: To solve this problem, we need to find the number of sisters Sally has based on the given information. Given information: Sally has 3 brothers. Each brother has 2 sisters. Step 1: Find the total number of sisters the brothers have.

    Grok 3: Sally, a girl, has 3 brothers. Each of these brothers has 2 sisters. Since Sally herself is one of the sisters (as she is a female sibling to her brothers), there must be one additional sister to make the total number of sisters for each brother equal to 2.

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, Grok 3 has the edge: bigger model tier, newer, bigger context window.

Claude 3 Sonnet and Grok 3 compared across 12 shared prompts
SpecClaude 3 SonnetGrok 3
Input price$3/M tokens—
Output price$15/M tokens—
Context window—128K tokens
Free API (OpenRouter)NoNo
ReleasedMar 2024Feb 2025
HumanEval73.0%94.5%
At 10M a month$30.00$30.00–not listed
1M10M100M1B10M tokens

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

Common questions

What is the difference between Claude 3 Sonnet and Grok 3?

Claude 3 Sonnet is developed by Anthropic while Grok 3 is developed by xAI. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Sonnet or Grok 3?

It depends on your use case. Claude 3 Sonnet and Grok 3 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 Sonnet and Grok 3 on Rival?

This page shows a side-by-side comparison of Claude 3 Sonnet and Grok 3 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 Sonnet vs Ling 3.1 FlashLanded Oct 2026
  • Grok 3 vs Mistral Large 4Landed Oct 2026
  • Claude 3 Sonnet vs GPT-6.1 SolLanded Sep 2026
  • Grok 3 vs Claude Sonnet 5.5Landed Sep 2026
  • Claude 3 Sonnet vs Solar Mini 4Landed Sep 2026
  • Grok 3 vs Qwen3.8 Max PrimeLanded Sep 2026
  • Claude 3 Sonnet vs GLM 5.3 PrimeLanded Sep 2026
  • Grok 3 vs Qwen3.8 Omni FlashLanded Sep 2026

Same lab, same size, long tail

  • Claude 3 Sonnet vs Claude Sonnet 5.5Version compare
  • Claude 3 Sonnet vs Claude Opus 5.5Same lab
  • Grok 3 vs Grok 4.7Same lab
  • Grok 3 vs Grok 4.6Version compare
  • Grok 3 vs Grok 4.1 FastSame lab
  • Claude 3 Sonnet vs Grok 4.20 BetaCross-provider
  • Claude 3 Sonnet vs Grok 4.20 Multi-Agent BetaCross-provider
  • Claude 3 Sonnet vs Grok 4.3Same size

Model pages

  • Claude 3 Sonnet13 outputs, specs and price
  • Grok 357 outputs, specs and price
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