Compare GPT-5.2 Pro by OpenAI against Claude Opus 4 by Anthropic, context windows of 400K vs 200K, tested across 18 shared challenges. Updated February 2026.
18 challenges
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
All 3 brothers share the same sisters. Since each brother has 2 sisters, the family has 2 girls total. One is Sally, so the other is Sally’s one sister.
Answer: 1 sister.
I need to work through this step-by-step.
Given information:
Since Sally is one of the sisters that each brother has, and each brother has 2 sisters total, that means th ere must be exactly 2 sisters in the family.
The 2 sisters are:
Therefore, Sally has 1 sister.
Tests an AI's randomness and creativity
Unique jokes: 5.
Here are 5 jokes:
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 scarecrow win an award? He was outstanding in his field!
What do you call a fake noodle? An impasta!
Why don't eggs tell jokes? They'd crack up!
All 5 jokes are unique - each one has a different setup and punchline, covering different topics (atoms/scie nce, bears, scarecrows, pasta, and eggs).
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Recreate an interactive, classic Mario level in a single HTML file.
Generate SVG art of a randomly chosen animal in a setting of its choosing.
Create a starter plan for improving long-term health.
Design a clean SVG logo for a fictional brand.
Create a super simple, playable rhythm game.
Recreate a classic, retro, macOS Desktop UI — make it interactive and nostalgic, make it as interactive as you can, you can be creative.. Feel free to showcase your skills. The entire application must be a single-page self-contained HTML file.
Write a pro-level buy-side investment memo with valuation and diligence questions.
Build a simplified LBO with returns and sensitivities.
Create an autonomous drone simulator with custom environment using ThreeJS
