Anthbot M9 Pro
For quarter-acre yards with heavy tree cover or tight spaces, where adding LiDAR to RTK is worth the premium over the M9.
Amazon $1,399 Anthbot $1,399$1,399
The Anthbot M9 Pro rates 4.1 among up to 1/4 acre robot lawn mowers; the Sunseeker X3 Plus rates 3.5 among 1/4 to 1 acre ones. The Sunseeker X3 Plus costs $562.02 less ($836.98 vs $1,399).
Sunseeker X3 Plus
#19 in 1/4 to 1 acreFull review
For small, fairly flat, open suburban lawns where buyers want wire-free mowing on a budget. Hilly or heavily shaded yards should look elsewhere.
Amazon $836.98 Sunseeker $999.99$836.98
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (up to 1/4 acre and 1/4 to 1 acre), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Anthbot M9 Pro | Sunseeker X3 Plus |
|---|---|---|
| Overall rating | 4.1/5 | 3.5/5 |
| Value 30% | 71 $5,600 per rated acre | 71 $2,790 per rated acre |
| Navigation 20% | 100 LiDAR + RTK + vision, no boundary wire | 80 RTK + vision, no boundary wire |
| Slopes 20% | 36 45% (24°) slopes | 9 30% (17°) slopes |
| Features 15% | 100 8 of 8 | 75 6 of 8; no 4G, height set in the app |
| Warranty 10% | 67 3-year warranty | 33 2-year warranty |
| Noise 5% | 80 58 dB(A) rated | 67 60 dB(A) rated |
Specifications
| Anthbot M9 Pro | Sunseeker X3 Plus | |
|---|---|---|
| Coverage | ||
| Lawn size (rated) | 0.25 acres (10,900 sq ft) | 0.3 acres (13,100 sq ft) |
| Max slope | 45% (24°) | 30% (17°) |
| Run time per charge | - | 2 h |
| Charge time | - | 1 h 30 min |
| Battery | 5 Ah | 5 Ah |
| Navigation | ||
| Navigation | LiDAR + RTK + vision | RTK + vision |
| Boundary wire needed | No | No |
| RTK station | Included | Included |
| Obstacle avoidance | 360° LiDAR + AI cameras | AI camera + ultrasonic |
| Multiple zones | Yes | Yes |
| No-go zones | Yes | Yes |
| Cutting | ||
| Cutting width | 7.9 in (200 mm) | 8 in (203 mm) |
| Cutting height | 1.2–2.8 in (30–70 mm) | 1.6–3.2 in |
| Height adjustment | In the app | By hand (knob) |
| Blades | - | Offset blade disc |
| Edge mowing | EdgeWiz edge mowing | Ride-on-edge cutting with offset blade disc |
| Smart features | ||
| Connectivity | 4G (1 year of 4G included) | Wi-Fi, Bluetooth |
| Rain sensor | Yes | Yes |
| Anti-theft | Anti-theft tracking | GPS tracking and geofence alerts |
| Build | ||
| Noise (rated) | 58 dB(A) | 60 dB(A) |
| Water resistance | IPX6 | - |
| Weight | - | 19.6 lb (8.9 kg) |
| Warranty | 3 years | 2 years |