Logitech Alto Keys K98M Wireless Mechanical Keyboard vs Logitech Signature Slim K950 Wireless Keyboard
Get the Logitech Alto Keys K98M. Unless you need a near-silent keyboard and don't care about a backlight — then the Signature Slim K950.
Logitech Alto Keys K98M Wireless Mechanical Keyboard
Logitech's cushioned mechanical keyboard for typing: smooth pre-lubed keys, a compact layout that keeps the number pad, a backlight and three devices. Louder than the MX Keys.
Logitech Signature Slim K950 Wireless Keyboard
A slim, extremely quiet full-size keyboard that switches between three devices, for less than the MX Keys S. No backlight and no recharging.
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The K98M is lovely to type on, backlit and well built, and keeps the number pad in a compact layout. The K950 costs less and is extremely quiet, but has no backlight and cheaper-feeling keycaps.
- —You want a nicer typing feel and a backlight.
- —You type a lot at home.
- —You like mechanical keyboards.
- —You share an office or call a lot.
- —You want to spend less.
- —You prefer slim keys.
Key differences
Pros and cons
- +Soft, cushioned mechanical typing
- +Compact, with a number pad
- +Backlit, three devices
- −Louder than a scissor-key keyboard, so not for quiet shared offices.
- −Most comfortable with a wrist rest, which isn't included.
- −The software only records simple macros on a few keys.
- +Extremely quiet, slim keys
- +Switches between three devices
- +Full size with a number pad
- −No backlight.
- −Runs on two AAA batteries, with no recharging or cable.
- −The keycaps feel a little cheap.
- −Only simple shortcuts can be set in the software.
For the curious
A deeper look at full specs.
Keys
Mechanical and backlit on the Alto Keys; a slim full-size board on the K950.
Power
Rechargeable against AAA batteries for up to 36 months.
Technical specifications
| Alto Keys K98M | Signature Slim K950 | |
|---|---|---|
| Layout | 98 keys, compact with number pad | Full size with number pad; tilt legs for an 8° angle |
| Type | Mechanical, wireless | — |
| Backlight | White | — |
| Connection | Logi Bolt USB receiver or Bluetooth Low Energy; Easy-Switch between 3 devices | Logi Bolt USB receiver (included) or Bluetooth 5.1, 10 m range |
| Battery | Rechargeable, up to 12 months with backlight off | 2 AAA (included), up to 36 months |
| Special keys | 3 customisable action keys | — |
| Size | 401 × 147 × 39.6 mm | 433.8 × 134.8 × 23.1 mm |
| Weight | 1,100 g | 685 g with batteries |
| Software | Logi Options+ on Windows and macOS | Logi Options+ on Windows and macOS |
| Devices | — | Easy-Switch between 3; works with Logitech Flow mice |
| Keys | — | Printed for Windows, Mac and ChromeOS |
From the maker's spec sheet for the Alto Keys K98M (Logitech Alto Keys K98M (US)) and the Signature Slim K950 (Logitech Signature Slim K950), checked October 2026. Versions sold in other countries can differ slightly.
- Is the Alto Keys K98M worth it?
- Is the Signature Slim K950 worth it?
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How we reached this verdict
We compared independent expert reviews with the manufacturer's specifications, then checked it's sold at a major retailer where you live. We don't test products ourselves.
Sources: RTINGS, RTINGS, Engadget, Trusted Reviews, manufacturer specifications.