Compare Keychron K4 Pro vs K5 Differences Side by Side

The Keychron K4 Pro offers much better customizability with full QMK/VIA firmware support, allowing complete remapping of keys and macros. It also comes in a barebone DIY kit version. The Keychron K5 does not support QMK/VIA, and its hot-swappable feature is limited to the low profile Keychron optical switch version only, making it less suitable for deep customization.

Yes, both keyboards come with keycaps for both Windows and Mac operating systems, as stated in their vendor descriptions. The K4 Pro includes a dedicated Mac/Win support feature, and the K5 also supports both OS, making them cross-platform compatible out of the box.

The Keychron K5 is generally better for quiet offices due to its ultra-slim low-profile design and switch options that reduce noise. User reviews frequently mention it is whisper quiet. The K4 Pro also includes sound-absorbing foam and a silicone dampening pad for a peaceful typing sound, but its standard height switches may still be louder than the K5's low-profile ones.

Yes, the K4 Pro has a significantly larger 4000mAh battery compared to the K5's 2000mAh battery. This means the K4 Pro can last longer on a single charge in wireless mode, making it better for users who do not want to charge frequently.

The K4 Pro offers three levels of adjustable typing angle (3 degrees, 7 degrees, and 10 degrees) according to its vendor description, providing ergonomic flexibility. The K5 does not have adjustable feet, and user reviews note that it tilts forward when placed on a flat surface, which may require a stand or wrist pad for comfort.

The K4 Pro comes with higher quality double-shot PBT keycaps in an OSA profile, which are more durable and oil-resistant. The K5 uses standard ABS keycaps, which are more prone to developing a shiny surface over time. However, the K5 has shine-through keycap options for better backlight visibility.

Yes, both keyboards are hot-swappable. The K4 Pro supports almost all 3-pin and 5-pin MX style mechanical switches like Cherry, Gateron, and Kailh. The K5's hot-swappable feature is only available on the low profile Keychron optical switch version and is not compatible with normal MX style switches.

The K4 Pro is generally better for gaming because it has a 1000 Hz polling rate (the K5's is not specified), a steel plate for stability, and PBT keycaps for durability. Its south-facing RGB also prevents interference with standard keycap profiles. The K5 is not marketed primarily for gaming and has lower performance scores.

No, only the K4 Pro supports key remapping via QMK/VIA firmware and the Keychron Launcher web app. The K5 does not have QMK/VIA support; it is a more basic keyboard without advanced key programming capabilities.

The K4 Pro uses an ABS plastic case with a steel plate for a solid, stable feel, while the K5 combines an aluminum body with internal plastic, offering a more premium look and a thinner profile. The K4 Pro includes sound dampening foam and screw-in PCB stabilizers, while the K5 focuses on a slim, low-profile aluminum construction.

Both offer RGB and white backlight options. The K4 Pro uses south-facing RGB LEDs to better illuminate from the typist's angle and avoid interference with Cherry profile keycaps. The K5 uses north-facing RGB LEDs, which may cause interference with some keycap profiles and can be brighter on the switch body rather than the key legends.

The provided vendor descriptions do not include a carrying case in the box for either keyboard. The K4 Pro has optional palm rests available for purchase, such as a resin palm rest for K4 and a silicone palm rest for 75%/96% sizes. The K5's box includes the keyboard, a USB-A to USB-C cable, a keycap puller, and a user manual.