Introduction
Dreame presents two high-end models that compete directly in the premium market segment: the L40s Pro Ultra, launched in 2025, and the X50s Ultra, which arrived in May 2026. Both units feature a complete multifunction base, capable of washing and drying mops with hot water and air, as well as automatically emptying the robot's dust container.
These robot vacuum cleaners are designed for users seeking maximum autonomy in home cleaning, with minimal maintenance intervention required. The differences between them are notable, especially in suction power, navigation and some thermal mopping features. They are ideal for medium or large homes, with pets and a variety of surfaces.
Power and Suction
The most evident difference lies in suction power. The Dreame X50s Ultra practically doubles the L40s Pro Ultra's capacity, going from 19,000 Pa to 35,000 Pa. This improvement translates into greater effectiveness on long-pile carpets and in extracting ingrained dirt. For homes with pets that shed a lot of hair, this difference can be decisive.
Both models use Dreame's dual HyperStream brush, a design with two brushes anchored at one end that minimises hair tangles. This is especially useful in homes with animals, as it reduces manual maintenance of the main brush.
Both feature an extendable and liftable side brush during mopping. The side brush is also anti-tangle. The main brush can be raised during mopping, which prevents dragging wet dirt across the floor when the robot is mopping.
Mopping
Both robots mop with two rotating mops that extend to better reach edges and corners. They incorporate the Roboswing system, which allows the robot to perform a lateral movement to slightly introduce the mops under furniture or overhangs. The mops lift 10.5 mm when the robot detects carpets or when returning to the base.
The main difference in the mopping system lies in water temperature. The Dreame X50s Ultra uses hot water at 45°C to mop the floor, whilst the L40s Pro Ultra uses cold water. Hot water helps to better dissolve grease and adhered dirt, which can be especially noticeable in kitchens or high-traffic areas.
The bases of both models wash the mops with hot water and dry them with hot air, which ensures the mops are clean in each cleaning cycle and prevents bad odours. Both robots automatically remove the mops at the base when a vacuum-only session is scheduled, which is very practical.
Both units detect dirt on both the mops and the floor, adjusting washing and scrubbing as necessary. This function allows the robot to go over especially dirty areas again until they are clean.
Navigation System
The Dreame L40s Pro Ultra mounts a traditional 3D LiDAR turret, whilst the X50s Ultra incorporates retractable LiDAR. This change allows the robot's total height to be reduced, facilitating access under low furniture. In practice, the X50s Ultra can slip under beds or sofas where the L40s Pro Ultra cannot reach.
Both models are equipped with dual artificial intelligence camera and front 3D laser sensor to avoid obstacles. The X50s Ultra recognises up to 280 different objects, expanding the catalogue compared to the L40s Pro Ultra's 180. This includes pets, curtains, cables, slippers and other common household items.
Both robots feature remote camera access, which allows home monitoring from the app. They also have LEDs for night vision, facilitating navigation in low-light conditions. Intelligent cleaning with CleanGenius and AI stain recognition are present in both models.
Autonomy and Battery
The Dreame X50s Ultra is equipped with a 6,400 mAh battery, superior to the L40s Pro Ultra's 5,200 mAh. Although the X50s Ultra's autonomy is not specified, the greater capacity suggests it can cover longer cleaning sessions without needing to return to the base to recharge.
The L40s Pro Ultra offers 220 minutes of autonomy with its 5,200 mAh battery, which is sufficient for medium-large sized homes in a single charge. For very large homes, the X50s Ultra's greater capacity can make the difference, avoiding cleaning interruptions.
Smart Functions
Both models can overcome simple thresholds of up to 4 cm, which facilitates passage between rooms with small level changes or access to thick carpets. Both feature their own voice assistant and are compatible with Alexa and Google Home.
Multifunction Cleaning Base
The bases of both robots are complete multifunction: they empty the dust container, wash the mops with hot water, dry them with hot air and have a detergent tank. The washing tray self-cleaning is third generation in both cases, which reduces manual maintenance.
The dust bag capacity is 3.2 litres in both models. The L40s Pro Ultra's clean water tank is slightly larger: 4.5 litres compared to the X50s Ultra's 4.2 litres. In contrast, the L40s Pro Ultra's dirty water tank is 4 litres, whilst the X50s Ultra's is 3 litres. These differences are minimal in daily use.
Both models offer an optional kit for connection to plumbing, which is purchased separately. Neither includes integrated connection nor UV disinfection.
Dimensions
The Dreame X50s Ultra measures 79.5 mm in height, compared to the L40s Pro Ultra's 103.8 mm. This difference of more than 2 centimetres allows the X50s Ultra to slip under furniture where the previous model cannot reach. The diameter is practically identical: 352 mm compared to 350 mm.
The X50s Ultra's base is wider (390 mm compared to 340 mm) but less tall (499 mm compared to 590.5 mm). The depth is also smaller: 423 mm compared to 456.7 mm. It's advisable to measure the available space before deciding, especially if you plan to place the base in a tight space.
Real-World Experience
The Dreame X50s Ultra is designed for users seeking maximum performance in all aspects. Its 35,000 Pa power is especially useful in homes with pets that shed a lot of hair or in homes with long-pile carpets. Hot water for mopping the floor improves the removal of grease and adhered dirt, which is noticeable in kitchens and high-traffic areas.
The X50s Ultra's lower height expands the range of furniture under which it can clean. If you have low sofas or beds, this model accesses areas that the L40s Pro Ultra cannot reach. The greater battery capacity also favours cleaning large homes without interruptions.
The Dreame L40s Pro Ultra remains a very complete robot, with advanced features in navigation, mopping and autonomy. Its 19,000 Pa power is sufficient for most homes, and the multifunction base guarantees good mopping with washing and drying of mops with hot water and air. The height difference compared to the X50s Ultra can be a limiting factor if you have many low pieces of furniture.
Both models are suitable for medium or large homes, with hard floors, parquet and carpets. The dual HyperStream brush system and anti-tangle side brushes facilitate maintenance in homes with animals. Dirt detection and the advanced navigation system ensure consistent results without needing to intervene.
Conclusion: Which to Choose?
Choose the Dreame L40s Pro Ultra if you're looking for a high-end robot with complete multifunction base and don't need maximum suction power. It's a solid option for medium-sized homes with hard floors and short-pile carpets. If your furniture has sufficient height and you don't require hot water for mopping the floor, this model offers excellent performance with all the advanced navigation and mopping functions.
Choose the Dreame X50s Ultra if you prioritise maximum suction power, especially if you live with pets that shed a lot of hair or have thick carpets. Its lower height facilitates access under low furniture, and hot water for mopping the floor improves cleaning in greasy areas. The greater battery capacity is advantageous in large homes. It's the most advanced option for those seeking the best performance in all aspects, without compromises.
