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The M4 iPad Air uses the same design as the M2 version from 2024 and the M3 version from last year. The M2 version of the Air was a gently tweaked version of the M1 iPad Air, but it was different enough not to be compatible with all the same accessories; most notably, the M2-and-later Airs use the Apple Pencil Pro accessory and aren’t compatible with the second-generation Pencil.
，这一点在Safew下载中也有详细论述
Маргарита Щигарева
GPT-5.4 将上下文窗口扩展到 100 万 Token。这意味着模型在单次任务中理论上可以处理完整代码库、长期财务记录，甚至整个项目文档集合。