Keychron K4 Max vs K5 Ultra
Get the Keychron K4 Max for the 4,000 mAh battery. Get the Keychron K5 Ultra for the 8,000 Hz polling rate.
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5.0 (1)5.0 · 1 reviews
from$99at Keychron
5.0 (4)5.0 · 4 reviews
from$114at Keychron
Which one should you get?
Get the
Keychron K4 Max
Battery
Build quality in the top 20% of 96% boards under $100.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Missing ISO-DE, ISO-FR, ISO-ES. The other board is sold in those layouts.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Get the
Keychron K5 Ultra
polling rate
Build quality in the top 15% of 100% boards under $150.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron K4 Max
Keychron K5 Ultra
Layout size
96%
100%
Battery
4,000 mAh
2,600 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Max polling rate
1,000 Hz
8,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS
ABS, Metal, Wood
- Keychron K4 Max
- Keychron K5 Ultra
- Performance
- 8291
- Build quality
- 8075
- Productivity
- 8993
- Customizability
- 9289
- Portability
- 5156
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
- Sound dampening
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K4 Max
1 owner reviews
Keychron K5 Ultra
4 owner reviews
“This keyboard is exactly what I was looking for. Low profile, great switches, not uber gamery. Very happy so far, hopefully it keeps working for a long time.”
Keychron K4 Max vs K5 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
14 of 28 specs differ
Keychron K4 Max
Keychron K5 Ultra
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K4 Max
Keychron
ISO
In stockShips to you
Keychron K5 Ultra
Keychron (DE)
ISO-DE, ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
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