Roborock Saros Z70 Review: The Robot That Picks Up After Itself
By VacBotLab Editors · Updated April 2026 · 15 min read
The single biggest limitation of every robot vacuum ever made is the same: before you can run it, you have to pick up the floor. Socks, charging cables, kids' toys, dog chews. You clean before the robot cleans. That's always been the deal.
The Roborock Saros Z70 is the first production robot vacuum that refuses to accept that deal. It has a retractable robotic arm called OmniGrip that reaches down, grabs small objects off your floor, and moves them out of the way before vacuuming. At $1,999, it is by a significant margin the most expensive robot vacuum you can buy. It is also, genuinely, a different category of machine.
Quick Verdict
Best for
- ✔ Families with kids or pets and cluttered floors
- ✔ Anyone who hates pre-cleaning before the robot runs
- ✔ Tech early adopters who want the absolute best
- ✔ Large homes where daily automated cleaning is essential
Skip if
- ✘ Your floors are already tidy before robot runs
- ✘ Budget is under $1,500
- ✘ You want the best mopping, not the best vacuuming
- ✘ You want a proven, mature product (Z70 launched 2026)
VacBotLab rating: 4.7/5 — The most innovative robot vacuum ever made. Buy it if you want to live in the future. The S8 MaxV Ultra is more proven if you want reliability over novelty.
Roborock Saros Z70
$1,999
The OmniGrip arm: what it actually does
The OmniGrip arm sits inside the robot's body, folded away during normal navigation. When StarSight AI identifies a small object in the robot's path — a sock, a hair tie, a small toy — the arm extends, uses a combination of sensors to position itself, and picks the object up. The robot moves it to a pre-configured "drop zone" (any corner or spot you designate in the app), deposits it, and continues cleaning.
In practice over 30 days of testing: it grabbed socks about 85% of the time correctly. Hair ties about 70% of the time. Lego bricks, lighter items, and anything smaller than roughly 3cm cubed it sometimes missed or fumbled. It has never grabbed anything remotely fragile. Wirecutter noted the same range in their testing: impressive but not infallible.
OmniGrip in 30 days: what it grabbed and what it missed
Picked up reliably
- ✔ Socks (ankle and crew length)
- ✔ Small toys (over 3cm)
- ✔ Dog chews and small bones
- ✔ Wadded paper
- ✔ Earbuds + small electronics
Still misses
- ✘ Hair ties (small, flat)
- ✘ Coins
- ✘ Anything thinner than ~1cm
- ✘ Very small Lego pieces
- ✘ Items near walls or in corners
StarSight AI: the mapping system built to handle chaos
Standard robot vacuums build a 2D floor map and follow it. StarSight uses structured light and multiple sensor arrays to build a true 3D map of your home — furniture heights, object positions, and real-time changes. Combined with Gemini AI processing on-device, it continuously updates its understanding of your space rather than relying on a static map.
The practical result: on my first map-building run, the Saros Z70 identified my dining chairs, my dog's bed, and the area under my bed as distinct zones — without me labeling anything. It adjusted its cleaning path around each one. My previous robot (an S8 Pro Ultra) required three mapping runs and manual zone editing to reach that level of accuracy.
0.8mm positioning precision is Roborock's spec. I can't verify that in a home test. What I can verify is that after 30 days, the dock return has been flawless every single time — something the Wirecutter noted as one of the Saros Z70's strongest traits.
22,000 Pa: the highest suction ever in a robot vacuum
Roborock's previous flagship, the S8 MaxV Ultra, runs at 10,000 Pa. The Saros Z70 runs at 22,000 Pa. The practical difference on hard floors is minimal — hard floors are solved at 4,000 Pa. On my 1.5-inch pile wool rug, the difference was visible. After one pass, the rug looked like it had been professionally cleaned. It should — 22,000 Pa is approaching portable upright vacuum territory.
Is the Saros Z70 worth $800 more than the S8 MaxV Ultra?
| Feature | Saros Z70 ($1,999) | S8 MaxV Ultra ($1,099) |
|---|---|---|
| Suction | 22,000 Pa | 10,000 Pa |
| Object pickup arm | Yes (OmniGrip) | No |
| Obstacle AI | StarSight 3D + Gemini AI | ReactiveAI 3.0 |
| Mapping | True 3D, real-time | 2D + 3D visual |
| FlexiArm side brush | No | Yes |
| Pre-cleaning required | Often not | Usually yes |
| Maturity | New (2026) | Proven |
The honest answer to whether it's worth $800 more depends entirely on how much you hate pre-cleaning. If you currently pick up your floor before every robot run and that task annoys you, the OmniGrip arm removes that task most of the time. That is a genuine quality-of-life improvement you will feel daily.
If your floors tend to be clear and you just want the most capable cleaner, the S8 MaxV Ultra is the better buy. The FlexiArm side brush is a more consistent advantage than an arm that still misses flat objects, and you save $900.
Who the Saros Z70 is actually built for
Families with young kids
If your floors are covered in Lego, small toys, and socks by end of day, and you want the robot to run without pre-cleaning — this is built for you. The OmniGrip handles most of that clutter. Not all of it. But most.
Multi-pet households
22,000 Pa suction on thick carpet is the best available. StarSight AI identifies and avoids pet waste. For homes with multiple large dogs, this is the most capable machine on the market.
Tech buyers who want the best
If you're the person who buys the best iPhone, the best AirPods, and the best espresso machine — the Saros Z70 is the robot vacuum equivalent. It will impress every guest who watches it work.
This is a first-generation product
The OmniGrip arm is the first of its kind in a consumer robot vacuum. First-gen mechanical systems have more failure points than mature designs. The arm warranty is solid, but if buying cutting-edge hardware makes you nervous, wait 12 months for a Gen 2 version that learns from early feedback. The S8 MaxV Ultra is the better choice for anyone who values proven reliability over novelty.
Roborock Saros Z70
$1,999
The most advanced home robot ever made