Apple MacBook Air 15-inch M4 vs Apple MacBook Air 13 M4

Both are M4 MacBook Airs with 16GB of memory and a 256GB SSD, so the real decision is screen size versus portability. The 15-inch gives you a bigger 15.3-inch Liquid Retina display, six speakers, a 66.5Wh battery rated up to 18 hours, and a 10-core GPU. The 13-inch is the one to carry all day: 1.24 kg, a 53.8Wh battery, and the same M4 CPU, though its base chip has an 8-core GPU. Owners and reviewers consistently praise the fanless design, silent operation, and long battery life on both; the 15-inch draws the usual complaint that it is bigger and heavier, and the 13-inch the usual complaint that its screen feels cramped for side-by-side work.

• Choose the 15-inch MacBook Air if you work across multiple windows, watch video, or want the bigger screen and six-speaker sound and don't mind the extra size and weight.
• Choose the 13-inch MacBook Air if portability matters most and you want the lightest M4 Air for travel, commuting, and everyday tasks.