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Saros Z70 Saros 20
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412 robots 9 categories 173 priced

Comparing 2 robots

Green cells flag numeric leaders, while AI, sensors, and capability rows keep the real buying tradeoffs visible.

Saros Z70Saros 20
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Sources and record checks

Record checks are not independent testing or confirmation of every claim. Official sites provide manufacturer context; source context explains the record.

Saros Z70

Record last checked: 2026-05-25

Official site Source context

Saros 20

Record last checked: 2026-05-25

Official site Source context
Each row compares one spec across your shortlist. Green marks the best value.
Saros Z70 Saros Z70 Saros 20 Saros 20

Price

Saros Z70
$1,000 USD
Price details

$999.99 current official Roborock US store price, listed against $2,599.99 compare-at/MSRP; official product page shows the product available as of 2026-07-18.

Saros 20
$1,600 USD
Price details

$1,599.99 MSRP; launched at $1,389.99 (March 23–29, 2026 promotional pricing).

Height

Saros Z70
7.98cm (3.14 in)
Saros 20
~7.98 cm (3.14 in)

Weight

Saros Z70
38.14 lbs (robot + dock combined)
Saros 20
Not officially disclosed

Battery Life

Saros Z70
6,400 mAh Li-ion; official FAQ says about 2h15+ vacuuming/mopping with the arm disabled, or about 2h10+ with the arm enabled while tidying 10 items (Mop Wash Frequency set to 15 minutes).
Saros 20
Up to 190 minutes

Max Speed

Saros Z70
Not disclosed
Saros 20
Not disclosed

AI

Saros Z70
StarSight Autonomous System 2.0 with AI object recognition
Saros 20
StarSight Autonomous System 2.0; 300+ object type recognition; VertiBeam lateral avoidance

Sensors

Saros Z70
LiDAR (StarSight 2.0), 3D Structured Light, RGB Camera, Cliff Sensors, Wall Sensors
Saros 20
Embedded 3D ToF LiDAR (StarSight 2.0), VertiBeam Lateral Obstacle Avoidance, RGB Camera, Cliff Sensors

Connectivity

Saros Z70
Wi-Fi, Bluetooth
Saros 20
Wi-Fi, Bluetooth

Status

Saros Z70
Available
Saros 20
Available

Category

Saros Z70
Cleaning
Saros 20
Cleaning
More specifications (4)

Includes rows even when values are not recorded.

Charging Time

Saros Z70
2.5-hour fast chargingNot safely comparable as a typed unit
Saros 20
Not officially disclosed

Degrees of Freedom

Saros Z70
N/A
Saros 20
N/A

Voice Assistants

Saros Z70
Amazon Alexa, Google Assistant, Siri
Saros 20
Hello Rocky (onboard), Amazon Alexa, Google Assistant, Siri

Manufacturer

Saros Z70
Roborock
Saros 20
Roborock

Capabilities

Saros Z70

22,000 Pa HyperForce SuctionAI Object RecognitionAdaptiLift ChassisAuto Dust EmptyingAuto Mop Washing & DryingDual Anti-Tangle BrushesFlexiArm Riser Side MoppingLiDAR Mapping & NavigationMulti-functional Dock 4.0Object Pickup up to 300 g (socks, sandals, crumpled tissues, towels; more items planned via OTA)Obstacle RelocationOmniGrip 5-Axis Mechanical ArmVacuuming and Mopping

Saros 20

131°F (55°C) Warm-Air Mop Drying212°F (100°C) Hot-Water Mop Washing36,000 Pa HyperForce SuctionAdaptiLift Chassis 3.0 (wheel lifting + climbing arm)Double-Layer Threshold Crossing (up to ~3.46 in / 8.8 cm)Dual Anti-Tangle Brush SystemDual Rotating Mop Pads with Auto-LiftDynamic Carpet Height Adjustment (up to 1.18 in / 3 cm pile)FlexiArm Edge Mopping (toe-kick spaces from 0.79 in / 2 cm)Multi-Floor MappingOptional Auto Refill and Drainage IntegrationRockDock Auto Dust Emptying (2.7L bag, up to 65 days)StarSight 2.0 Navigation (300+ Object Recognition)Vacuuming and MoppingVertiBeam Lateral Obstacle Avoidance

How to Compare Robots

Use this flow to get to a clean shortlist fast. The route works best as a dense research workbench, not a marketing page.

1

Choose comparable robots

Start with robots that solve the same job. Use category anchors like Humanoid, Cleaning, Companions, Research before you worry about micro-spec wins.

2

Read the big deltas first

Check price, status, battery, sensors, and capabilities before getting lost in minor spec rows.

3

Switch to differences only

Once you have a shortlist, hide shared rows. That turns the table from a spec dump into a real decision tool.

Cross-category comparisons still have value

A dedicated cleaner versus a home assistant with cleaning features can reveal whether you really need a specialist or just broader household coverage. Compare around the same outcome, not the same marketing language. And when blank-page friction is the problem, use one of the prebuilt quick-start pairings in the workbench above — open one, swap robots, and keep moving.

Making Your Decision

Turn comparison rows into an actual recommendation — not just more reading.

1

Weighted priorities

Not all spec deltas matter equally. Rank your buying criteria before crowning a winner.

  • List must-haves — smart-home platform, clearance, shipping status, or anything that eliminates a robot instantly.
  • Pick your top 3 differentiators — navigation, noise, battery, support, or whatever changes daily use.
  • Score only the finalists against those. The robot that wins your real priorities beats the one with the most green cells.
2

Total cost of ownership

The sticker price is only one row. Subscriptions, consumables, and service access often decide the real winner.

Subscriptions

Cloud AI and premium app tiers can make a cheaper robot more expensive over three years.

Consumables

Brushes, pads, filters, and bags flip the value story on high-frequency robots.

Energy & battery

Large batteries and frequent charging reveal everyday operating demands.

Repair & warranty

Local servicing and spare-parts access are the quietest but most important long-term costs.

3

Environment check

Specs describe ideal conditions. Your rooms, pets, and Wi-Fi determine what actually performs.

  • Floor types — carpet, hardwood, tile, and transition handling.
  • Space layout — open plans vs. multi-room homes with tight doorways.
  • Wi-Fi coverage — cloud-heavy robots need stable signal everywhere.
  • Household — pets, kids, shared spaces, and noise tolerance.

Purchase and deployment access

Available listings: 125. Pre-order listings: 54. Active records: 130. Available indicates an ordering listing, not confirmed stock. Pre-order indicates a reservation listing, not immediate delivery. Active status alone does not confirm public purchase availability or deployment. Other statuses do not establish a current purchase listing. Confirm regional access, stock, reservation terms, and delivery with the manufacturer.

When it's too close to call

If two robots are still neck-and-neck, use softer signals that affect ownership quality more than spec sheets admit.

Return policy User community Ecosystem Aesthetics

Comparison FAQ

Questions buyers ask before the final click

Short answers to the questions that usually show up once the shortlist is live and the tradeoffs feel real.

Frequently Asked Questions

Using the workspace
How many robots can I compare at once?
You can compare up to four robots at once. Two or three is usually the cleanest decision view, but four-way comparisons work well for wider market scans.
What does 'Show differences only' do?
It hides rows where all selected robots share the same value, leaving only the rows that actually change your decision. It is especially useful for same-brand or same-category shortlists.
Can I compare robots from different categories?
Yes. You can compare any of the 412 robots in the database. Cross-category comparisons work best when the robots still compete for the same outcome in your home or workflow.
What makes a good comparison?
The best pairings share at least one real-world anchor: same job, similar price band, same room constraints, or competing brand tier. That keeps the table decision-focused instead of random.
Sharing & shortlisting
How do I share a comparison?
Once you have a live shortlist, a Share this comparison link appears in the workbench. It preserves your selected robots and the differences-only toggle in a permanent URL.
Can I save or bookmark a comparison for later?
Yes. Every live comparison has a stable route, so bookmarking the page preserves the exact configuration you built.
Can I compare by price alone?
Price is one row in the compare table, but if you want pure price sorting first, the all robots page is the better place to shortlist before coming back here.
Data & methodology
Are specifications up to date?
ui44 comparison data is sourced from official manufacturer documentation and re-verified on a rolling basis. Shipping products get the most frequent freshness checks.
What if a spec is missing?
A dash or 'Not specified' usually means the manufacturer has not published the detail clearly. It does not automatically mean the robot lacks the feature.
How should I compare robots at different development stages?
Status labels describe catalog records, not measured operational reliability. Available indicates a purchase listing, not verified stock or shipping dates. Active alone does not confirm public purchase access. Pre-order indicates a reservation listing, not engineering completion or a guaranteed delivery queue position. Development and Prototype identify recorded stages; Discontinued identifies a discontinued listing. Compare documented performance and current manufacturer terms, including any recorded sales notes, for the specific model and region.
Can I compare specific sensors or components more deeply?
Yes. The compare table gives you the side-by-side overview, then the components directory lets you go deeper on shared sensors, radios, and platform pieces across the catalog.