# Dreame L40s Ultra vs Dreame X50 Ultra

As of Oct 31, 2026, the Dreame L40s Ultra costs $570 and the Dreame X50 Ultra costs $1,000, so the Dreame L40s Ultra is $430 cheaper. The Dreame L40s Ultra has a published review score and ranks #9 in our robot vacuums ranking; the Dreame X50 Ultra is not scored yet. Pick the Dreame L40s Ultra for pet owners with carpet on a budget. Pick the Dreame X50 Ultra for multi level floors with raised sills and pets.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/dreame-l40s-ultra-vs-dreame-x50-ultra/

## Side by side

| | Dreame L40s Ultra | Dreame X50 Ultra |
|---|---|---|
| Price | $570 | $1,000 |
| 3 year cost | $570 | $1,000 |
| Our score | 8.6/10 | Not scored yet |
| Rank in Floors | #9 | #70 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years per the Dreame US product page (terms may vary by region) |
| Suction | 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above average | Up to 20,000 Pa (Dreame); Vacuum Wars measured 0.81 kPa bench suction and 17 CFM airflow |
| Navigation | LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute | VersaLift DToF LiDAR that retracts to lower the robot (Dreame) |
| Obstacle avoidance | 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7 of 24 objects | AI RGB camera with 3D structured light, up to 200 object types (Dreame); Vacuum Wars scored 20 of 24 against a 13 average |
| Mopping | Dual spinning mops, 10.5 mm lift, extend and auto removal (Dreame); Vacuum Wars measured 0.95 g water left and a 259 combined mop score | Dual spinning pads, MopExtend reaches out up to 4 cm, 10.5 mm lift on carpet (Dreame) |
| Self empty | Yes, 3.2 L dust bag, up to 100 days (Dreame) | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty, 167 F (75 C) hot water mop wash, hot air drying, self cleaning washboard, auto detergent and water refill, 4.5 L clean and 4.0 L dirty tanks; water hookup kit sold separately (Dreame) | Auto empty, hot water mop washing up to 80 C with four settings, 113 F hot air drying, auto detergent, auto refill, 4.5 L clean and 4.0 L used tanks (Dreame) |
| Runtime | Up to 220 min in quiet mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,935 sq ft per charge | Up to 220 min in quiet mode, 6,400 mAh battery (Dreame); Vacuum Wars estimated 1,130 sq ft per charge |
| Dustbin | 310 ml robot bin plus 3.2 L dock bag (Dreame) | 395 ml robot bin plus 3.2 L dock bag (Dreame) |
| Height | 3.82 in (Dreame) | 89 mm (3.5 in) with sensor retracted, 111 mm raised (Dreame) |
| Pet hair | HyperStream Detangling DuoBrush (Dreame); Vacuum Wars measured 91% pet hair pickup, 92% carpet sand removal and 0% hair wrap | Vacuum Wars measured 98% pet hair pickup and 0% hair wrap |
| App | Dreamehome app with third party voice assistants only (Dreame); Vacuum Chef notes no built in voice assistant or live video | Dreamehome app with built in voice control; works with Alexa, Google Assistant, Siri and Matter; 2.4 GHz Wi-Fi only (Dreame) |
| Threshold | 1.57 in double layer and 0.87 in single steps (Dreame) | 42 mm single step, 60 mm two tier step (Dreame) |
| Noise | Vacuum Chef measured 78 dB at max suction | n/a |
| Best for | pet owners with carpet on a budget | multi level floors with raised sills and pets |
| Skip if | your floor often has cables, socks or toys | you want the best stain mopping per dollar |

## What reviewers found

### Dreame L40s Ultra

- Vacuum Wars (3.51 Vacuum Wars stars): 92% carpet sand removal, 91% pet hair pickup and 0% hair wrap with the DuoBrush, about 1,935 sq ft per charge, but only 7 of 24 obstacles avoided. [Source](https://vacuumwars.com/dreame-l40s-series-review/)
- Vacuum Chef (95/100): Scored 95/100 in its real world cleaning tests, measured 490 FPM carpet airflow and 78 dB at max suction. Obstacle avoidance varied by floor and object. [Source](https://vacuumchef.com/dreame-l40s-ultra-review-powerful-suction-smart-mopping-real-world-performance-tested/?amp=1)

### Dreame X50 Ultra

- Vacuum Wars (3.60 Vacuum Wars stars): Removed 83% of embedded sand and 98% of pet hair with 0% hair wrap and avoided 20 of 24 obstacles. Dried stain score was 80 against a 94 average. Estimated coverage was about 1,130 sq ft per charge. [Source](https://vacuumwars.com/dreame-x50-ultra-review-is-it-the-best-yet)

## Questions buyers ask

### Which is better, the Dreame L40s Ultra or the Dreame X50 Ultra?

The Dreame L40s Ultra has a published review score and ranks #9 in our robot vacuums ranking; the Dreame X50 Ultra is not scored yet. Pick the Dreame L40s Ultra for pet owners with carpet on a budget. Pick the Dreame X50 Ultra for multi level floors with raised sills and pets.

### Which is cheaper?

The Dreame L40s Ultra at $570, versus $1,000 for the Dreame X50 Ultra, checked Oct 31, 2026. Over 3 years with running costs: $570 vs $1,000.

### What is the difference between the L40s Ultra and the X50 Ultra?

Suction: 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above… on the L40s Ultra, Up to 20,000 Pa (Dreame); Vacuum Wars measured 0.81 kPa bench suction and 17 CFM airflow on the X50 Ultra. Navigation: LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute on the L40s Ultra, VersaLift DToF LiDAR that retracts to lower the robot (Dreame) on the X50 Ultra. Obstacle avoidance: 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7… on the L40s Ultra, AI RGB camera with 3D structured light, up to 200 object types (Dreame); Vacuum Wars… on the X50 Ultra.

Full reviews: [Dreame L40s Ultra](https://robotsforthat.com/robot/dreame-l40s-ultra/index.md), [Dreame X50 Ultra](https://robotsforthat.com/robot/dreame-x50-ultra/index.md)