Keychron K3 Pro vs K4 ProLow Profile vs Full Layout

Both are excellent for programming because they support QMK and VIA for full key remapping and macros. The K3 Pro offers a more compact layout that saves desk space, while the K4 Pro includes a numpad that some developers prefer for quick number entry. The choice depends on whether you value a smaller footprint or a dedicated numpad.

Yes, the K3 Pro is fully compatible with Mac and comes with keycaps for both macOS and Windows. The vendor notes that it includes the same multimedia and function key functions as Apple keyboards for Mac users. You can also configure different keymaps for each operating system using the Keychron Launcher web app.

Yes, the K4 Pro uses a steel plate, which provides a sturdier typing feel and more responsive feedback. This is in contrast to the K3 Pro, which uses a plastic plate. The steel plate also contributes to the K4 Pro's higher weight of 1280g.

The K4 Pro has a larger 4000mAh battery, while the K3 Pro has a 1550mAh battery. The vendor does not specify exact battery life in days, but the larger capacity in the K4 Pro will generally support longer use between charges. The K3 Pro's lower capacity is a trade-off for its slim and lightweight design.

It depends on which version you buy. The K3 Pro ABS keycaps version is shine-through and designed for backlight visibility. The PBT version features double-shot PBT keycaps which are non-shine-through. Both versions have south-facing RGB LEDs that illuminate from the typist's angle.

The K4 Pro is generally better for modding because it comes with a steel plate, screw-in PCB stabilizers, and sound dampening foam. It also accepts almost all 3pin and 5pin MX style switches, giving you more switch options. The K3 Pro is limited to Gateron low-profile mechanical switches only.

Yes, the K4 Pro supports Bluetooth 5.1 and can connect to up to 3 devices wirelessly. It also supports a wired USB Type-C connection. The vendor describes it as a solution for multitasking across a laptop, phone, and tablet.

The K3 Pro offers a 1000 Hz polling rate on wired mode, which the vendor says is engineered for competitive gaming and makes latency hardly noticeable. Its lighter weight and low profile design may also appeal to gamers who prefer a compact setup. However, it only accepts Gateron low-profile switches, so switch choices are limited.

The K3 Pro is a 75% layout measuring 306 x 116 mm and weighing 930g. The K4 Pro is a 96% layout with a numpad, measuring 391 x 139 mm and weighing 1280g. The K3 Pro is significantly more compact and lighter, making it better for travel.

Both keyboards support QMK firmware and can be customized using the Keychron Launcher web app. The vendor states that you can program each key or create macro commands through the web app. The keyboards need to be connected via wired mode to use the launcher with Chrome, Opera, or Edge browsers.

Yes, the vendor states that the K4 Pro includes added sound-absorbing foam and a thick silicone dampening bottom pad. These are designed to provide a more peaceful typing sound. The K3 Pro does not mention sound dampening in its vendor description.

The K4 Pro has a higher build quality score based on metadata, and its steel plate and screw-in stabilizers contribute to a solid feel. The K3 Pro uses a plastic plate and a thinner aluminum case, but it is designed to be ultra-slim. Reviews for the K3 Pro note that it feels well built for a low-profile keyboard.