Building apps directly on iPhone using ChatGPT showcased
reach_vb · x · 2026-08-01
A developer demonstrated building an application directly on an iPhone using ChatGPT. In the quoted tweet, they also introduced the concept of "Luna-maxxing," claiming that the Luna (Max) model matches the performance of GPT-5.5 xHigh at roughly 12 times lower cost, while Terra Max scores 2.6 points higher for 45% less cost.
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