Claude 3 Opus has a larger context window than Grok 3 (200K tokens vs 128K tokens).
Sections that transition like Framer. Timing is the whole grade.
Which answer wins?
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 3: Alright, here’s a 3-minute stand-up comedy routine—no puns, just some observational absurdity and a bit of self-deprecation to keep it relatable. Hey, everybody! Good to be here. You ever notice how life feels like a video game tutorial that never ends?
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 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?
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 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.
| Spec | ||
|---|---|---|
| Input price | $15/M tokens | — |
| Output price | $75/M tokens | — |
| Context window | 200K tokens | 128K tokens |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Feb 2025 |
| MMLU | 86.8% | 83.1% |
| At 10M a month | $150 | not listed |
Input tokens at list price. No caching, no batch discount.
Claude 3 Opus is developed by Anthropic while Grok 3 is developed by xAI. Claude 3 Opus has a 200K token context window vs Grok 3's 128K. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.
It depends on your use case. Claude 3 Opus and Grok 3 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.
This page shows a side-by-side comparison of Claude 3 Opus 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.