Both the Galaxy S23 and the Galaxy S23+ share a lot of hardware, including the camera system, the Qualcomm Snapdragon 8 Gen 2 for Galaxy SoC, and the general design, except for the obvious size.
The Galaxy S23 is built around a 6.1-inch 2340x1080 Dynamic AMOLED 2x screen with 120Hz refresh rate, so it measures and weighs 146.3x70.9x7.6mm and 168g. The Galaxy S23+ is somewhat larger with the same but larger 6.6-inch Dynamic AMOLED 2X screen. Both are also protected by Corning Gorilla Glass Victus 2 and, just like the Galaxy S23 Ultra, have the "armor aluminum frame", making it much more resistant to drops and scratches.
As said, both also feature Qualcomm's Snapdragon 8 Gen2 for Galaxy SoC, a slightly tweaked in cooperation with Qualcomm, bringing somewhat higher clocks.
The Galaxy 23 will be available in 8GB/128GB, 8GB/256GB and 8GB/512GB configurations, while the Galaxy S23+ gets 8GB/256GB and 8GB/512GB ones.
When it comes to the camera system, both phones get the main 50-megapixel sensor sitting behind a 24mm f/1.8 lens with Dual Pixel PDAF and OIS. It is backed by a 10-megapixel sensor with a telephoto lens and 3x optical zoom and a 12-megapixel one with a 13mm f/2.2 ultrawide lens with Dual Pixel PDAF.
The front camera got updated to the same 12-megapixel 26mm f/2.2 Dual Pixel PDAF one, which is also found on the Galaxy S23 Ultra.
The Galaxy S23 gets a 3,900mAh battery, with 25W wired charging, while the Galaxy S23+ has a 4,700mAh battery with 45W charging.
Both the Galaxy S23 and the Galaxy S23+ will be available in those funky new colors, Phantom Black, Cream, Green, and Lavender. The Galaxy S23 starts at $799/949 for the 8GB/128GB version, while the Galaxy S23+ starts at $999/€1,199.