Quick Answer: Greenworks robot mowers are a good buy at street price and a poor one at list. The entire 2026 Greenworks lineup — the Optimow 25 (1/4 acre), Optimow 50 and 50H (1/2 acre), plus the commercial Optimow 66H (2/3 acre per charge) — runs on a buried boundary wire, not RTK or vision, and every model is rated to the same 35% (roughly 19–20°) slope. What makes Greenworks worth a look is what’s bundled: integrated 4G GPS tracking with a free two-year GreenGuide subscription, 600 feet of 18 AWG wire and 400 staples in the box, and a 4-year limited warranty. List prices sit near $1,599.99, but Costco has sold the Optimow 50H at $749.97 and Greenworks has discounted it to around $800 — and that discounted price is the only price at which we’d recommend it over a wire-free Segway Navimow or Mammotion Luba 2 AWD.
Greenworks is a household name in cordless outdoor power equipment, so plenty of homeowners searching for a robot mower start with the brand they already own a leaf blower from. That’s a reasonable instinct — and it deserves an honest answer, because Greenworks made one strategic choice that separates it from almost every rival in 2026: it never moved to wire-free navigation. While Mammotion, Segway, Dreame, Eufy and Toro spent three years racing to eliminate the boundary wire, Greenworks kept refining a wired platform and spent its budget on cellular tracking and warranty instead. Whether that’s a mistake or a bargain depends entirely on what you pay.
Greenworks Optimow at a glance
| Spec | Greenworks Optimow |
|---|---|
| Navigation | Boundary wire + guide wire (no RTK, no camera) |
| Boundary | Buried/pinned wire — 600 ft (18 AWG) + 400 staples included |
| Coverage | Optimow 25 ~1/4 ac · Optimow 50 / 50H ~1/2 ac · 66H ~2/3 ac per charge |
| Max slope | 35% (~19–20°), per Greenworks — same across the line |
| Cutting system | Three pivoting blades |
| Cutting height | 0.8–2.4 in (50H is the high-cut variant) |
| Run / charge | ~150 min cut · 70 min charge (50) vs 270 min charge (25) |
| Connectivity | 4G cellular + GreenGuide app · free 2-year subscription |
| Tracking | Integrated GPS, included — not a paid add-on |
| Weather rating | IPX5 — hose-rinsable |
| Warranty | 4-year limited |
| Price | ~$1,599.99 list · $750–$900 street/sale |
Check Greenworks Optimow price on Amazon →
Robot mowers are heavy, awkward freight and delivery windows matter when you’re planning a wire install weekend — try Amazon Prime free for 30 days if you want the mower and its staples, wire and spare blades to land together rather than trickling in over a week.
The Greenworks robot mower lineup in 2026
Greenworks names its robot mowers by mowing area, and — like Worx — the number in the model name is the clue.
- Optimow 25 (SKU 2529902) — rated for a 1/4 acre mowing area on lots up to 1/2 acre. The entry model, also sold in a canopy/garage bundle. Watch the charge time (below).
- Optimow 50 (SKU 2530102) — the volume pick. 1/2 acre mowing area on lots up to 3/4 acre, and critically it recharges in about 70 minutes versus the 25’s 270.
- Optimow 50H (SKU 2530002) — the high-cut version of the 50, for homeowners who keep their turf longer than 2.4 inches suits. This is the model that shows up in the aggressive Costco and direct-from-Greenworks discounts.
- Optimow 33H / 66H — sold under Greenworks Commercial, with the 66H rated to mow up to 2/3 acre on a single charge and recharge in as little as 70 minutes. Overkill for most homes, relevant if you’re pricing a commercial robot lawn mower.
If your lawn is over a half-acre, Greenworks simply doesn’t have a residential answer — that’s the territory of our best robot mower for 1 acre and large yards guides.
What Greenworks gets right
4G GPS included, wire included, 4-year warranty
- Cellular, not Bluetooth. Greenworks states the Optimow uses 4G networks in North America for GreenGuide app access "no matter where you are," with a free 2-year subscription. Most rivals at this price use Bluetooth or home Wi-Fi, which stop working the moment the mower leaves the yard — exactly when you need tracking most.
- GPS anti-theft is standard. On a Worx Landroid, the equivalent Find My Landroid module is a separate purchase. On an Optimow it's in the box.
- The install kit is complete. 600 feet of 18 AWG guide wire plus 400 lawn staples ship with the mower, so a typical suburban perimeter needs no extra parts run.
- 4-year limited warranty. Longer than the 2–3 years most consumer robot mowers carry.
- IPX5. You can rinse it with a garden hose instead of wiping clippings off by hand.
There’s also a quieter point in Greenworks’ favour: reviewers who tested the slope claim found it honest. Mowing Magic noted that some manufacturers exaggerate the grade their mowers handle and that the Optimow “was able to come through” on its rating — a useful signal in a category where spec sheets are routinely optimistic. If slope honesty matters to you, cross-check our robot lawn mower for hills guide before buying anything rated near its limit.
Where Greenworks falls short
- It’s a wire mower in a wire-free market. There is no RTK model, no vision model, no antenna-free satellite option in the Greenworks residential lineup. If burying wire is the thing you’re trying to avoid, start at our robot lawn mower without perimeter wire guide instead — Greenworks isn’t on the shortlist.
- 35% slope, line-wide. Every Optimow shares the same 35% (~19–20°) ceiling. A Mammotion Luba 2 AWD is rated to 80% (38°) — more than double.
- The Optimow 25’s charge time. Greenworks lists the 25 at 150 minutes of cutting and 270 minutes of charging. That’s roughly a 36% duty cycle: for every hour of mowing you get, the mower spends nearly two hours on the base. The Optimow 50 does the same 150-minute cut and recharges in about 70 minutes — a 68% duty cycle, nearly double the work per day. On a lawn near the top of the 25’s rating, or in a wet week where you’re playing catch-up, that gap decides whether the mower keeps up.
- The app. Owner reviews of the GreenGuide app are the most consistent complaint about the platform — several Best Buy reviewers rated the mower’s cutting highly while calling the app poor. The hardware is not the weak link here; the software is.
- List price is not competitive. At $1,599.99 you are within reach of wire-free RTK machines. Only the discounted price makes sense.
Greenworks Optimow by the numbers
- $1,599.99 list vs $749.97 at Costco: Best Buy has listed the Optimow 50H at a comparable value of $1,599.99, while Costco has run the same 50H at $749.97 delivered and Greenworks has discounted it directly to around $800. That is a greater-than-2x spread on one SKU — the single most important fact about buying this brand. Never pay list.
- 270 minutes vs 70 minutes to recharge: Per Greenworks’ own spec sheets, the Optimow 25 needs 270 minutes to recharge after a 150-minute cut while the Optimow 50 needs about 70. Step up to the 50 for the charging, not just the coverage.
- 600 feet of wire and 400 staples in the box: Greenworks ships 600 ft of 18 AWG guide wire (DC resistance <25 ohm/km, >50 VRMS) with 400 lawn staples, so a standard suburban perimeter install needs no extra materials — a real cost saving versus mowers that sell the wire kit separately.
- 35% max slope, 4-year warranty: Greenworks rates every Optimow to 35% grade and backs them with a 4-year limited warranty, longer than the 2–3 years typical in the category.
Greenworks vs the alternatives
| Mower | Navigation | Max slope | Coverage | GPS tracking | Price |
|---|---|---|---|---|---|
| Greenworks Optimow 50/50H | Boundary wire | 35% (~20°) | ~1/2 acre | 4G, included (2 yr free) | ~$750–$1,600 |
| Greenworks Optimow 25 | Boundary wire | 35% (~20°) | ~1/4 acre | 4G, included | ~$700–$1,300 |
| Worx Landroid M/L | AIA + boundary wire | 35% (20°) | 1/4–1/2 acre | Paid add-on | ~$700–$1,100 |
| Husqvarna Automower 415X | GPS + boundary wire | 40% (22°) | ~0.4 acre | Included | ~$1,899 |
| Segway Navimow i Series | RTK GPS · wire-free | 45% (24°) | ~0.3–1 acre | Included | ~$1,199+ |
| Mammotion Luba 2 AWD | RTK GPS · AWD · wire-free | 80% (38°) | Up to ~1.25 acre | Included | ~$1,599+ |
The pattern is clear. Against the other wire mower — the Worx Landroid — Greenworks wins on bundled GPS and coverage per dollar when discounted, and loses when both are at full price. Against wire-free RTK machines, Greenworks only competes on price, and only on sale. Our Husqvarna Automower vs Worx Landroid comparison covers the wire-mower reliability question in depth, and Navimow vs Luba settles the wire-free side.
Who should buy a Greenworks robot mower
Buy it if: your lawn is flat-to-gently-rolling, under half an acre, you’re comfortable with a one-time wire install, you want GPS anti-theft without a subscription upsell — and you can find an Optimow 50 or 50H in the $750–$900 range. At that price it is one of the better value robot mowers sold in North America, and the 4-year warranty means you’re not gambling.
Skip it if: you have slopes over 35%, more than half an acre, or you specifically don’t want to bury wire. In those cases the money is better spent on a wire-free RTK mower — start with our best robot lawn mower rankings.
Whichever way you go, budget for the boring part: blades are a consumable, and a dull set is the most common reason a robot mower leaves a ragged, browning cut. Our robot lawn mower blades guide covers fitment and replacement intervals, and the robot lawn mower installation walkthrough is worth reading before you open the wire spool.
The bottom line
The Greenworks Optimow is a competent, well-warrantied, wire-guided robot mower that is priced wrong at list and priced brilliantly on sale. Get the Optimow 50 or 50H rather than the 25 — the 70-minute recharge versus 270 matters more than the coverage rating on the box — set a price alert, and buy in the $750–$900 window. If you find yourself considering one at $1,599.99, close the tab and read our best robot lawn mower pillar instead: at that number you can have a wire-free Mammotion Luba 2 AWD or Segway Navimow and never bury a foot of wire.