Apple MacBook Air 13-inch (M4, 2025) vs Apple MacBook Air 15-inch (M3, 2024): specs comparison
How the Apple MacBook Air 13-inch (M4, 2025) (2025 laptop) and the Apple MacBook Air 15-inch (M3, 2024) (2024 laptop) differ, worked out only from the values on each maker’s official spec page. No prices, ratings or benchmark scores.
Key differences
- Apple MacBook Air 13-inch (M4, 2025) is the newer model: it launched in 2025, Apple MacBook Air 15-inch (M3, 2024) in 2024.
- Apple MacBook Air 13-inch (M4, 2025) uses a newer chip from the same family: M4 vs M3.
- Apple MacBook Air 15-inch (M3, 2024) has the larger battery: 66.5 Wh vs 53.8 Wh for Apple MacBook Air 13-inch (M4, 2025).
- Apple MacBook Air 15-inch (M3, 2024) has the bigger screen: 15.3-inch vs 13.6-inch on Apple MacBook Air 13-inch (M4, 2025).
- Apple MacBook Air 13-inch (M4, 2025) offers more RAM: up to 32 GB vs up to 24 GB.
- Apple MacBook Air 13-inch (M4, 2025) has Thunderbolt 4; Apple MacBook Air 15-inch (M3, 2024)'s port list has no Thunderbolt port.
- Apple MacBook Air 13-inch (M4, 2025) is lighter: 1.24 kg vs 1.51 kg for Apple MacBook Air 15-inch (M3, 2024), 270 g less.
Who should pick which
- Pick the Apple MacBook Air 13-inch (M4, 2025) if you want the newer model (2025), the newer M4, more RAM (up to 32 GB) and Thunderbolt 4.
- Pick the Apple MacBook Air 15-inch (M3, 2024) if you want the larger 66.5 Wh battery and the bigger 15.3-inch screen.
Full specifications side by side
| Spec | Apple MacBook Air 13-inch (M4, 2025) | Apple MacBook Air 15-inch (M3, 2024) |
|---|---|---|
| Launched | 2025 | 2024 |
| Processor (CPU) | Apple M4 chip, 10-core CPU with 4 performance cores and 6 efficiency cores | Apple M3 chip with 8-core CPU (4 performance and 4 efficiency cores), 16-core Neural Engine |
| Graphics (GPU) | 8-core GPU or 10-core GPU | 10-core GPU with hardware-accelerated ray tracing |
| Memory (RAM) | 16GB unified memory, configurable to 24GB or 32GB | 8GB or 16GB unified memory, configurable to 16GB or 24GB |
| Storage | 256GB SSD, configurable to 512GB, 1TB or 2TB | 256GB SSD, configurable to 512GB, 1TB or 2TB |
| Display | 13.6-inch (diagonal) LED-backlit display with IPS technology, 2560x1664 native resolution at 224 pixels per inch | 15.3-inch (diagonal) Liquid Retina display, 2880 x 1864, 224 ppi, 500 nits brightness, P3 wide colour |
| Battery | Built-in 53.8-watt-hour lithium-polymer battery, up to 18 hours video streaming, up to 15 hours wireless web | 66.5-watt-hour lithium-polymer, up to 15 hours wireless web or 18 hours Apple TV app movie playback |
| Ports | MagSafe 3 charging port, 3.5mm headphone jack, two Thunderbolt 4 (USB-C) ports | MagSafe 3 charging port, 3.5mm headphone jack, two Thunderbolt / USB 4 ports |
| Weight | 1.24 kg (2.7 pounds) | 1.51 kg (3.3 pounds) |
| Operating system | macOS | macOS |
| Dimensions | Height: 1.13 cm (0.44 inches), Width: 30.41 cm (11.97 inches), Depth: 21.5 cm (8.46 inches) | 1.15 x 34.04 x 23.76 cm (H x W x D) |
| Source | Official specs · checked 2026-10-28 | Official specs · checked 2026-11-08 |
Questions
What is the difference between Apple MacBook Air 13-inch (M4, 2025) and Apple MacBook Air 15-inch (M3, 2024)?
Apple MacBook Air 13-inch (M4, 2025) is the newer model: it launched in 2025, Apple MacBook Air 15-inch (M3, 2024) in 2024. Apple MacBook Air 13-inch (M4, 2025) uses a newer chip from the same family: M4 vs M3. Apple MacBook Air 15-inch (M3, 2024) has the larger battery: 66.5 Wh vs 53.8 Wh for Apple MacBook Air 13-inch (M4, 2025).
Which is lighter, Apple MacBook Air 13-inch (M4, 2025) or Apple MacBook Air 15-inch (M3, 2024)?
Apple MacBook Air 13-inch (M4, 2025) is lighter: 1.24 kg vs 1.51 kg for Apple MacBook Air 15-inch (M3, 2024), 270 g less.
Which is newer, Apple MacBook Air 13-inch (M4, 2025) or Apple MacBook Air 15-inch (M3, 2024)?
Apple MacBook Air 13-inch (M4, 2025) is the newer model: it launched in 2025, Apple MacBook Air 15-inch (M3, 2024) in 2024.
Every difference above is calculated from the two spec tables, which are copied from Apple’s official pages. A spec that only one page states is not compared. Variants and options differ by region, so confirm on the official page before you buy. Spotted a difference? Report a correction.