We made Grok 4.5, GPT-5.5, and Claude build the same apps
Summary
The article compares Grok 4.5, GPT-5.5, Claude Opus 4.8, and Claude Fable 5 across three interactive apps, evaluating latency and cost. It concludes that Grok 4.5 excels in speed and affordability, while Opus 4.8 and Fable 5 are the most reliable builders, and GPT-5.5 shines in visuals but lags on some tasks.