The base model of the 13-inch MacBook Air is now $200 cheaper than the 15-inch MacBook Air, while still offering most of the same functions and capabilities. Both laptops run on Apple's M2 chip
The short answer is no: The core technology is largely the same here. The 2023 MacBook Air 15-Inch: Slightly higher resolution than the 13-incher (Credit: Brian Westover) The new Air uses Apple

13-inch MacBook Air with M2 chip is designed with the following features to reduce its environmental impact: 6. Made with better materials. 100% recycled aluminum in the enclosure 7; 100% recycled rare earth elements in all magnets, representing 98% of the rare earth elements in the device; 90% recycled steel in the battery tray

Both the 11- and 13-inch MacBook Airs are listed as having. Full-size keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted “T” arrangement) on Apple's tech specs page. I would assume "full-size" means they have the same keyboard as the rest of the Mac lineup. EDIT: just had a look around and the 04Eh9b.
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    • dimensions of 13 macbook air