Winner
20% OFF
$799.99
$999.99
Updated November 2026
Data from the official Roborock site.
2026 verdict
The Roborock Qrevo Curv 2 Flow is the better value of these two Roborock robot vacuums, leading on runtime and price while the Roborock Saros 20 Sonic takes the suction and connectivity.
The Qrevo Curv 2 Flow runs up to 242 minutes against 190, carries 325 ml onboard against 228 ml, and its roller mop rinses itself in real time. The Saros 20 Sonic brings 36,000 Pa against 20,000 Pa, dual-band Wi-Fi and Bluetooth against the Curv's 2.4 GHz, and Matter support working today for Apple Home, SmartThings and Home Assistant. Both self-empty, wash and dry their mops and lift the mop on carpet. Buy the Roborock Qrevo Curv 2 Flow for a longer run and a lower price, and the Roborock Saros 20 Sonic for maximum suction and the wider connectivity.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Price unavailable right now
Connectivity
- Wi-Fi 2.4/5 GHz
- Bluetooth
News by email
Still comparing? Get what's new by email
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
The biggest differences
Where these two are furthest apart, and by how much.
- Suction Power+80%Roborock Saros 20 Sonic36000Pa vs 20000Pa
- Onboard Dustbin Capacity+43%Roborock Qrevo Curv 2 Flow325ml vs 228ml
- Battery Life+27%Roborock Qrevo Curv 2 Flow242 minutes vs 190 minutes
| Feature | Roborock Qrevo Curv 2 Flow | Roborock Saros 20 Sonic | Winner |
|---|---|---|---|
| Battery Life | 242 minutes | 190 minutes | Roborock Qrevo Curv 2 Flow |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | Roborock Saros 20 Sonic |
| Suction Power | 20000Pa | 36000Pa | Roborock Saros 20 Sonic |
| Onboard Dustbin Capacity | 325ml | 228ml | Roborock Qrevo Curv 2 Flow |
| Local Control | NO | YES | Roborock Saros 20 Sonic |
| Rating | 4.2 | 4.2 | Tie |
| Warranty | 1 year | 1 year | Tie |
| Auto Recharge | YES | YES | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Navigation Type | Laser (LiDAR) | Laser (LiDAR) | Tie |
| Obstacle Detection | YES | YES | Tie |
| Cliff Detection | YES | YES | Tie |
What the differences mean
Suction
The Roborock Saros 20 Sonic rates 36,000 Pa against 20,000 Pa for the Roborock Qrevo Curv 2 Flow, so it is the stronger cleaner on carpet and embedded pet hair.
Runtime
The Roborock Qrevo Curv 2 Flow is rated for up to 242 minutes against 190, so it cleans more floor before it returns to recharge.
Connectivity
The Roborock Saros 20 Sonic supports 2.4 GHz and 5 GHz Wi-Fi plus Bluetooth. The Roborock Qrevo Curv 2 Flow is 2.4 GHz only, which complicates setup on combined dual-band routers.
Smart home support
The Roborock Saros 20 Sonic supports Matter today for Apple Home, SmartThings and Home Assistant. The Roborock Qrevo Curv 2 Flow lists Matter and Apple Home as an upcoming over-the-air update.
Onboard bin
The Roborock Qrevo Curv 2 Flow carries 325 ml against 228 ml in the Roborock Saros 20 Sonic, so the cheaper robot empties slightly less often between dock visits.
Which one to buy if
- you want the strongest suction
Its 36,000 Pa rating is nearly double the 20,000 Pa of the Roborock Qrevo Curv 2 Flow.
- your home runs on Apple Home or SmartThings
The Roborock Saros 20 Sonic supports Matter now, while the Curv lists it as a future update.
- you want the longest runtime
Its 242 minute rating is well ahead of the 190 minutes of the Roborock Saros 20 Sonic.
- the lower price is what decides it
The Roborock Qrevo Curv 2 Flow is the cheaper robot and still self-empties and cleans its mop.
- you want dual-band Wi-Fi and Bluetooth
Only the Roborock Saros 20 Sonic connects on both Wi-Fi bands and adds Bluetooth.
Winner
20% OFF
$799.99
$999.99
- + Battery Life: 242 minutes
- + Onboard Dustbin Capacity: 325ml
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
- - Suction Power: 20000Pa vs 36000Pa
Price unavailable right now
- + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
- + Suction Power: 36000Pa
- + Local Control: YES
- - Battery Life: 190 minutes vs 242 minutes
- - Onboard Dustbin Capacity: 228ml vs 325ml
What owners say
Owners of the Roborock Qrevo Curv 2 Flow describe a robot that needs little from them and gives a lot back. Daily runs go for weeks without a rescue, LiDAR mapping holds up, and the roller mop is rinsed with clean water and scraped while it works, so grime is not pushed around the floor. Pet households repeatedly credit the dual anti-tangle brush for hair pickup, and the app earns praise for per-room routines and automatic carpet boost. Their honest complaints are edge coverage, since it does not hug baseboards or reach under low cabinet kicks, some streaking on hardwood, and the periodic cleaning of the roller, scraper and dirty-water tank.
Frequently Asked Questions
Which is better overall: Roborock Qrevo Curv 2 Flow or Roborock Saros 20 Sonic?
The Roborock Qrevo Curv 2 Flow on runtime, bin size and price, and the Roborock Saros 20 Sonic on suction, dual-band Wi-Fi and Matter support that works today. Pick the Curv for endurance and value, and the Sonic for peak pulling power and wider connectivity.
What is the biggest difference between the Roborock Qrevo Curv 2 Flow and the Roborock Saros 20 Sonic?
Suction and runtime trade off. The Roborock Saros 20 Sonic pulls 36,000 Pa but runs about 190 minutes, while the Roborock Qrevo Curv 2 Flow pulls 20,000 Pa and runs up to 242 minutes. The Sonic also adds 5 GHz Wi-Fi, Bluetooth and working Matter.
Does the Roborock Qrevo Curv 2 Flow support 5 GHz Wi-Fi?
No. The Roborock Qrevo Curv 2 Flow connects on 2.4 GHz only, while the Roborock Saros 20 Sonic supports both 2.4 GHz and 5 GHz plus Bluetooth.
Do both robots wash and dry their mops?
Yes. The Roborock Qrevo Curv 2 Flow rinses its roller while it cleans and washes and dries it at the dock, while the Roborock Saros 20 Sonic washes, dries and doses detergent at the dock. Both lift the mop on carpet.
Who should buy the Roborock Qrevo Curv 2 Flow?
Hardwood and tile homes that want a long-running robot with a self-rinsing roller mop, a larger bin and a lower price, and that can wait on Matter support.
Who should buy the Roborock Saros 20 Sonic?
Large homes that want maximum suction, dual-band Wi-Fi and Bluetooth, and Matter working across Apple Home, SmartThings and Home Assistant, in a body slim enough for low furniture.
Spotted something wrong on this page? Tell us and we will fix it.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonFull comparison table
Compare all 179 Robot Vacuums side by side
You are looking at two of them. The full table lines up all Robot Vacuums in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 179 Robot Vacuums
- 47 specs compared
- 42 filters
- Robot Vacuums
Freo X Ultra
- Robot Vacuums
DEEBOT X2 COMBO
- Robot Vacuums
Roomba Plus 678 Combo Robot + AutoWash Dock
- Robot Vacuums
Roomba Max 875 Combo Robot + AutoWash Dock
- Robot Vacuums
DEEBOT T90S Omni
- Robot Vacuums
L60 Pro Ultra
- Robot Vacuums
Freo 20 Edge
- Robot Vacuums
DEEBOT X12S OmniCyclone
- Robot Vacuums
DEEBOT X11S PRO Omni
- Robot Vacuums
DEEBOT X11 PRO Omni
- Robot Vacuums
L8000 Plus
- Robot Vacuums
DEEBOT X12S PRO Omni
- Robot Vacuums
Aqua20 Pro Ultra Roller X Complete
- Robot Vacuums
S8 Max Ultra
- Robot Vacuums
L40 Ultra Gen 2
- Robot Vacuums
DEEBOT T30S Combo
- Robot Vacuums
DEEBOT T80S Omni
- Robot Vacuums
DEEBOT T90 MAX Plus Omni
- Robot Vacuums
DEEBOT T90 Omni
- Robot Vacuums
DEEBOT T90 Pro Omni
- Robot Lawn Mowers
RockMow X115H
- Robot Lawn Mowers
RockMow X120H
- Robot Lawn Mowers
RockMow X130H
- Robot Lawn Mowers
RockNeo Q110H
- Robot Vacuums
Q10 S5+
- Robot Vacuums
Q10 X5+
- Robot Vacuums
Q5 Max+
- Robot Vacuums
Q7 L5
- Robot Vacuums
Q7 M5+
- Robot Vacuums
Q7 M5
- Robot Vacuums
Q8 Max+
- Robot Vacuums
Qrevo 2 Pro
- Robot Vacuums
Qrevo Curv 2 Pro
- Robot Vacuums
Qrevo Curv S5X
- Robot Vacuums
Qrevo CurvX
- Robot Vacuums
Qrevo Edge 2
- Robot Vacuums
Qrevo Edge 3 Pro
- Robot Vacuums
Qrevo Edge S5A
- Robot Vacuums
Qrevo Plus
- Robot Vacuums
Qrevo Pro