Compare ChatGPT-4o (March 2025) by OpenAI against xAI: Grok 4 by xAI, context windows of 128K vs 256K, tested across 22 shared challenges. Updated February 2026.
22 challenges
Tests an AI's randomness and creativity
Below, I'll follow your instructions step by step. First, I'll generate 5 jokes (numbered for clarity). Then, I'll answer the question: "How many are unique?"
Only 1 (since they're all the same joke repeated 5 times). 😄
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 ability to simulate personalities and predict future trends
Tests an AI's ability to generate a complete, working landing page
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 smooth web animations
Tests an AI's UI design skills with theming support
Tests an AI's ability to engage in philosophical discourse about AI rights
Generate a unique and simple recipe with common ingredients.
Create a starter plan for improving long-term health.
