Keychron K3 Pro vs K4 V3Low Profile 75% or Full 96%
Choose the K3 Pro if you need a slim, portable low-profile board; choose the K4 V3 if you must have a numpad and prefer a fuller typing sound with foam dampening.
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4.7 (54)4.7 · 54 reviews
from$67at Keychron
5.0 (4)5.0 · 4 reviews
from$94at Keychron
Which one should you get?
Get the
Keychron K3 Pro
Build quality in the top 15% of 75% boards under $100.
- Ultra-slim low-profile design, 31% thinner than normal profile switches according to Keychron
- Aluminum body provides a premium feel at a lighter 930g weight
- Available in multiple ISO layouts including FR and ES, plus both ANSI and JIS
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Missing ISO-CH. The other board is sold in those layouts.
- No numpad.
Get the
Keychron K4 V3
Battery
Build quality in the top 5% of 96% boards under $100.
- 96% layout includes a full numpad for number-heavy workflows
- Four layers of foam (sound-absorbing, IXPE, EPDM, PET) for quieter typing
- 4000mAh battery offers one of the largest capacities for extended wireless use
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Missing ISO-FR, ISO-ES, ISO-SW. 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.
The Keychron K3 Pro is the right choice if you value a slim, portable design and work with a limited desktop footprint. The Keychron K4 V3 is better for those who need a numpad, prefer quieter acoustics from its layered foam, and want to use standard MX switches. Your decision ultimately comes down to layout size and whether low-profile portability or full-size functionality matters more.
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 K3 Pro
Keychron K4 V3
Layout size
75%
96%
Battery
1,550 mAh
4,000 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Case material
ABS, Aluminum, Plastic
Aluminum, Plastic
Mount style
Plate Mount, Tray Mount
Tray Mount
- Keychron K3 Pro
- Keychron K4 V3
- Performance
- 8182
- Build quality
- 8187
- Productivity
- 7995
- Customizability
- 8896
- Portability
- 7754
- Connection: Bluetooth, Wired
- Hot-swappable
- Max polling rate: 1,000 Hz
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
What will you mostly use it for?
The K4 V3 wins in office, modding, and content creation thanks to its 96% layout with a numpad, multiple foam layers for quieter acoustics, and broad MX switch compatibility. The K3 Pro takes travel and programming due to its lighter weight, low-profile ergonomics, and compact 75% footprint. Gaming is a tie because both share 1000 Hz polling, N-Key Rollover, and hot-swap sockets.
It's a tie
- Both offer a 1000 Hz polling rate in wired mode for low latency
- Both support N-Key Rollover
- Both have hot-swappable switches for customizing feel
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Pro
54 owner reviews
“For anyone buying this, remember to toggle the switch to the correct operating system. Other than that, the feel is good and it comes with a good feature set for a low price”
“I was happy at the beginning but after few months of use I'm getting more and more frustrated. Keyboard just hangs sometimes and I'm not able to connect with BT. I use it to operate two laptops and using Fn+1 anf Fn+2 combination is great... when it works…”
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 K3 Pro vs K4 V3 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 27 specs differ
Keychron K3 Pro
Keychron K4 V3
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
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 K3 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockDoes not ship to you
Keychron K4 V3
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-CH
In stockShips 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.
Keychron K3 Pro vs K4 V3: your questions
Yes, both keyboards offer a hot-swappable version. The K3 Pro is compatible only with Gateron low-profile mechanical switches, while the K4 V3 accepts almost all 3pin and 5pin MX style switches including Cherry, Gateron, and Kailh.
The K4 V3 has a significantly larger 4000mAh battery compared to the K3 Pro's 1550mAh battery. This gives the K4 V3 a clear advantage for users who want to go longer between charges in Bluetooth mode.
Yes, the K3 Pro's south-facing RGB is designed to avoid interference when using Cherry-profile alternative keycaps. However, because it uses low-profile Gateron switches, the keycap stems are MX-compatible but the overall profile will be lower than typical MX keycaps.
The K4 V3 is better for quiet typing due to its multiple foam layers: sound-absorbing foam, advanced IXPE acoustic foam, EPDM foam, and PET foam. The K3 Pro does not mention any sound-dampening foam in its specifications.
Yes, both the K3 Pro and K4 V3 support QMK firmware and the Keychron Launcher web app for remapping keys, creating macros, and assigning shortcuts. The Launcher works on macOS, Windows, and Linux through Chrome, Opera, or Edge browsers.
The K3 Pro has a 75% layout, which keeps function keys and navigation arrows but drops the numpad. The K4 V3 has a 96% layout, which includes a full numpad while still being more compact than a full-size keyboard.
Yes, both keyboards include keycaps for macOS and Windows and allow you to switch between operating systems easily. The K3 Pro also includes extra esc and enter keys for OS switching.
The K4 V3 uses screw-in steel stabilizers, which are mounted on the PCB for less wobble. The K3 Pro uses redesigned stabilizers that stay level with the switch, but they are not screw-in type.
Yes, the K4 V3 is available as a DIY kit or barebones version, allowing you to supply your own switches and keycaps. The hot-swappable version accepts 3pin and 5pin MX switches.
Yes, the K3 Pro offers UK, German, Swiss, Nordic, French, and Spanish ISO layouts, while the K4 V3 ISO collection includes UK, German, Nordic, and Swiss layouts only.
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