July 8, 2026
Cube fight, comment war
We made Grok 4.5, GPT-5.5, and Claude build the same apps
AI app battle sparks chaos as commenters roast the scoring and crown their own winners
TLDR: Four AI tools were asked to build the same mini apps, and while Claude and GPT impressed most on quality, Grok stood out for being much faster and cheaper. The comments instantly turned that into a fight over whether speed should matter more than getting the best result in the first place.
The app showdown itself was juicy, but the real spectacle was in the comments, where readers immediately turned a simple side-by-side test into a full-on fan war. The setup sounded straightforward: four big-name AI tools were each asked to build the same three tiny apps with one prompt and almost no second chances. In the results, Claude dominated the hard Rubik’s Cube challenge, GPT-5.5 won the hypnotic particle toy on pure visual flair, and everybody basically tied on the arcade game. Then Grok came in swinging on speed and price, blasting out answers faster and cheaper than the rest.
And that’s where the popcorn started flying. One camp saw Grok as the practical people’s champion. As one commenter put it, for expensive, high-stakes work you pay up, but for everyday jobs like searching logs and rolling out updates, Grok is the one changing their work life. The other camp was not having it. Critics pounced on the scoring like reality-show judges, with one calling it bizarre to describe Claude as the best performer and Grok as the weakest, then still hand Grok the crown for losing fastest. Ouch.
The skeptics also came armed with memes. One reader snarked, “Why not wait one more day for GPT-5.6?” mocking the endless upgrade treadmill, while another said they were “99% sure” the post itself was written by AI. And then came the classic internet kill shot: was this even a serious test, or just n=1 chaos dressed up as science? In other words: the apps were cool, but the comment section was the actual battle royale.
Key Points
- •The article compares Grok 4.5, GPT-5.5, Claude Opus 4.8, and Claude Fable 5 using the same three one-shot app-building prompts under fixed constraints.
- •In the Rubik’s Cube test, Claude Opus 4.8 and Claude Fable 5 produced fully working animated cubes on the first try, Grok 4.5 needed one retry, and GPT-5.5 rendered only a partial result.
- •In the particle gravity sandbox test, all four models produced working outputs, and the article names GPT-5.5 as the winner based on visual quality.
- •In the Breakout game test, all four models produced polished, playable games on the first try, and the round was declared a tie.
- •The article’s separate benchmark reports Grok 4.5 as fastest to first token, highest in throughput, and cheapest per reply, while Claude Fable 5 is listed as the slowest and most expensive.