Grok 4.5, GPT-5.5, and Claude Build-Off: Who Codes Best?

We made Grok 4.5, GPT-5.5, and Claude build the same apps

We pitted Grok 4.5, GPT-5.5, Claude Opus 4.8, and Claude Fable 5 against each other to build three distinct apps in a single HTML file. While the Claude models nailed the complex 3D Rubik's Cube first try, GPT-5.5 created the most mesmerizing gravity sandbox, and everyone delivered a playable Breakout game. Ultimately, Grok 4.5 emerged as the speed and value champion, streaming twice as fast as competitors at half the cost, despite stumbling on its initial cube attempt.

"That is not just drawing, that is comedy."