Compare Claude Sonnet 4 by Anthropic against GPT-4.5 by OpenAI, context windows of 200K vs 128K, tested across 18 shared challenges. Updated February 2026.
18 challenges
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
I need to think through this step-by-step.
Given information:
Let me work out how many sisters are in the family total.
If each of Sally's 3 brothers has 2 sisters, and all the brothers are in the same family, then there must be 2 sisters total in the family.
Since Sally is one of those sisters, and there are 2 sisters total, Sally must have 1 sister.
Therefore, Sally has 1 sister.
Sally has 1 sister.
Explanation:
Tests an AI's understanding of number representation
No, 9.11 is not greater than 9.9.
To compare these decimal numbers:
Since both numbers have the same whole number part (9), we compare the decimal parts:
Therefore, 9.9 is greater than 9.11.
Yes, (9.11) is less than (9.9).
To clarify:
Comparing (9.11) and (9.90), we see clearly that (9.11 < 9.90).
Tests an AI's ability to generate vector graphics
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Tests an AI's humor and creative writing ability
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
Recreate an interactive, classic Mario level in a single HTML file.
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Tests an AI's ability to create interactive web elements
Tests an AI's ability to create a detailed world map in SVG format
Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.
Generate SVG art of a randomly chosen animal in a setting of its choosing.
