Keychron K4 V3 vs K5 Ultra
Get the Keychron K4 V3 for the 4,000 mAh battery. Get the Keychron K5 Ultra for the 8,000 Hz polling rate.
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 V3
Keychron K5 Ultra
Layout size
96%
100%
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Battery
4,000 mAh
2,600 mAh
Low profile
No
Yes
Max polling rate
1,000 Hz
8,000 Hz
- Keychron K4 V3
- Keychron K5 Ultra
- Performance
- 8291
- Build quality
- 8475
- Productivity
- 9593
- Customizability
- 9689
- Portability
- 5456
- 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 V3
4 owner reviews
“I am overall extremely impressed with this keyboard! I upgraded from a Corsair K70 Luxe that I had for many years, and this feels like miles better of an experience. I am impressed how good the Banana switches are, they are a little more tactile than the…”
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 V3 vs K5 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 27 specs differ
Keychron K4 V3
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
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
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