Keychron K4 V2 vs K5 ProCompact vs Full-Size Slim
Choose the K5 Pro if you need a slim, programmable full-size keyboard; choose the K4 V2 if you prefer compact size and longer battery life.
Which one should you get?
Get the
Keychron K4 V2
Compact
- Massive 4000mAh battery allows up to 240 hours of use (backlight off) for extended wireless sessions.
- 96% compact layout saves desk space while retaining a full number pad and arrow keys.
- Hot-swappable options compatible with almost all MX style 3-pin and 5-pin switches for easy customization.
- Does not feature QMK or VIA support for advanced key remapping and programming.
- Uses ABS keycaps which are less durable and more prone to shine over time compared to PBT.
- Bluetooth 5.1 is used, but wireless polling rate is 90 Hz, which may feel less responsive for competitive gaming.
Get the
Keychron K5 Pro
Full-Size Slim
- Full QMK and VIA support via Keychron Launcher web app for unlimited key remapping and macro creation.
- Ultra-slim low-profile design with Gateron low-profile switches that are 31% slimmer than standard switches.
- Comes with durable double-shot PBT keycaps that offer excellent oil resistance.
- Smaller 2000mAh battery compared to the K4 V2, resulting in shorter wireless runtime.
- Hot-swappable option is only compatible with Gateron low-profile mechanical switches, limiting switch choices.
- Full-size layout is larger and less portable than the 96% K4 V2.
Ultimately, your choice depends on whether you prioritize deep customization or compact convenience. The K5 Pro is the right choice if you want a slim, fully programmable keyboard with a dedicated number pad and PBT keycaps. The K4 V2 is better if you need maximum battery life and a more space-saving layout without sacrificing essential keys. Both are solid wireless keyboards with hot-swappable switches, but they serve distinctly different user needs.
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 V2
Keychron K5 Pro
Layout size
96%
100%
Battery
4,000 mAh
2,000 mAh
Low profile
No
Yes
Mount style
Plate Mount, Tray Mount
Tray Mount
QMK
No
Yes
- Keychron K4 V2
- Keychron K5 Pro
- Performance
- 6480
- Build quality
- 7079
- Productivity
- 6781
- Customizability
- 7089
- Portability
- 5556
- Connection: Bluetooth, Wired
- Hot-swappable
- Max polling rate: 1,000 Hz
- Case material: ABS, Aluminum, Plastic
- Switch options: Clicky, Linear, Tactile
What will you mostly use it for?
The K5 Pro wins the majority of use cases due to its superior programmability and full-size layout. For programming, modding, and content creation, QMK/VIA support is a decisive advantage. The K4 V2 takes the lead for office and travel scenarios where its compact footprint and massive battery life offer more practical benefits. Gaming is a close call, but the K5 Pro's NKRO and specific mention of a gaming-capable polling rate give it a slight edge.
Pick the Keychron K5 Pro
- K5 Pro features a wired 1000 Hz polling rate right out of the box, which is mentioned alongside competitive gaming.
- The K5 Pro has N-Key Rollover (NKRO) support for both wireless and wired modes for reliable key registration.
- Low-profile switches can offer faster key travel for rapid inputs, though this is based on general design, not a stated spec.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K4 V2
1,198 owner reviews
“I'm a do it yourself pc builders and the ketron is perfect. I can do wired for my work Mac and back to windows for my gaming PC. Easy buy, easy typing. Love it.”
Keychron K5 Pro
8 owner reviews
“I love my new keyboard! It's the typing experience I've been seeking.”
Keychron K4 V2 vs K5 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 25 specs differ
Keychron K4 V2
Keychron K5 Pro
Switch options
Hot-swappable
Mount style
Low profile
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
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Lowest price across stores, Amazon excluded.
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Keychron K4 V2 vs K5 Pro: your questions
The K5 Pro supports QMK firmware and the Keychron Launcher web app for key remapping. A user review notes that it does not work directly with VIA as promised and requires the Keychron Launcher, which some users find less intuitive.
The Keychron K4 V2 has a significantly larger 4000mAh battery compared to the K5 Pro's 2000mAh battery. The K4 V2 is advertised to last up to 240 hours of typing with the backlight off.
Yes, the K4 V2 offers a hot-swappable version. The vendor description states it is compatible with almost all MX style 3-pin and 5-pin mechanical switches, though the tilde key supports 3-pin switches only.
The K4 V2 uses a compact 96% layout with 100 keys, saving desk space while keeping the number pad. The K5 Pro is a full 100% layout with 108 keys, providing a dedicated function row and all keys in a standard arrangement.
Yes, the K5 Pro is mentioned as suitable for competitive gaming due to its 1000 Hz polling rate in wired mode and N-Key Rollover support for both wired and wireless modes. User reviews also mention using it for gaming.
No, the K4 V2 does not feature QMK or VIA support. It is a pre-built keyboard with limited programmability, relying on hardware-based multimedia keys and Mac/Win system support rather than software customization.
The K4 V2 is more portable due to its smaller 96% footprint and larger battery. While exact weights are not provided for the K4 V2, its compact size and longer wireless runtime make it better suited for travel than the full-size K5 Pro.
Yes, both the K4 V2 and K5 Pro include keycaps and layouts for both macOS and Windows operating systems. The K4 V2 is specifically described as having keycaps for both systems, and the K5 Pro allows configuring different keymaps for each OS.
The K5 Pro comes with low-profile double-shot PBT keycaps in LSA (low profile spherical-angled) profile. The vendor description highlights these as durable, non-backlight shine through PBT material with excellent oil resistance.
Only the hot-swappable version of the K5 Pro allows switch changes, and it is currently only compatible with Gateron low-profile mechanical switches. The vendor explicitly notes it does not support low-profile optical switches due to QMK limitations.
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