There are three models in the Galaxy S23 lineup: the S23 ($799), the S23+ ($999), and the S23 Ultra ($1,199). The Galaxy S23 has a lower price point and a smaller display of 6.1 inches compared to the Ultra’s 6.8 inches. It’s also less heavy, at 5.93 oz compared to 8.25 oz, and has a 3,900mAh battery compared to the Ultra’s 5,000mAh battery.
The two phones have the same SoC, the Snapdragon 8 Gen 2 for Galaxy, and both are IP68-rated devices, meaning that they are waterproof for longer periods of immersion (think 30 minutes in about 5 feet of water) and dust-tight.
The Samsung Galaxy S23 Ultra has a pen, specifically an embedded S Pen for a phablet experience.
Also: Every Samsung Galaxy S23 model compared: Which model should you buy?