What is the main difference between the Keychron K3 Pro and K4 Max?

The K3 Pro is a 75% low-profile keyboard weighing 525 g, while the K4 Max is a 96% keyboard weighing 1290 g. The K4 Max also adds 2.4 GHz connectivity and has a larger 4000 mAh battery.

Is the Keychron K3 Pro or K4 Max better for travel?

The K3 Pro is the more portable option based on its listed weight of 525 g and dimensions of 306 x 116 mm. The K4 Max weighs 1290 g and measures 391 x 140 mm.

Does the Keychron K4 Max have 2.4 GHz wireless?

Yes, Keychron lists 2.4 GHz, Bluetooth, and wired connectivity for the K4 Max. The vendor specifies a 1000 Hz polling rate for its 2.4 GHz and wired modes.

Does the Keychron K3 Pro support 2.4 GHz?

The K3 Pro's listed connections are Bluetooth and wired, and its vendor description discusses Bluetooth and USB-C wired use. Keychron lists 2.4 GHz connectivity for the K4 Max.

Which keyboard has the larger battery, the K3 Pro or K4 Max?

The K4 Max has a 4000 mAh battery, compared with the K3 Pro's 1550 mAh battery. Keychron lists up to 190 hours for the K4 Max.

Are the Keychron K3 Pro and K4 Max hot-swappable?

Both models have hot-swappable versions, but switch compatibility differs. Keychron says the K3 Pro hot-swap version works with Gateron low-profile mechanical switches, while the K4 Max hot-swappable version supports almost all 3-pin and 5-pin MX-style mechanical switches.

Do the Keychron K3 Pro and K4 Max support QMK and VIA?

Both product listings include QMK and VIA support. Keychron also describes its Launcher web app for remapping keys and creating macros on both models.

Which keyboard has a fuller layout, the K3 Pro or K4 Max?

The K4 Max has a 96% layout, while the K3 Pro has a 75% layout. Choose the K4 Max if you want the larger layout, or the K3 Pro if a more compact layout is the priority.

What keycaps come with the Keychron K3 Pro and K4 Max?

The K3 Pro uses low-profile double-shot PBT keycaps, with dye-sublimated PBT on the Special Edition. The K4 Max comes with double-shot PBT keycaps in an OSA profile, according to Keychron.

Does the Keychron K4 Max have sound-dampening foam?

Yes, Keychron describes IXPE, PET, and EPDM acoustic foam layers in the K4 Max. The vendor says the layers are intended to improve its typing sound and experience.

Which keyboard is better for changing switches?

The K4 Max hot-swappable version has broader stated compatibility, supporting almost all 3-pin and 5-pin MX-style mechanical switches. The K3 Pro hot-swap version is limited to Gateron low-profile mechanical switches.

Do the Keychron K3 Pro and K4 Max support Mac and Windows?

Both listings include Mac and Windows support, and both vendor descriptions mention keycaps for those operating systems. Keychron also says each keyboard's Launcher configuration works with macOS, Windows, and Linux.

Compare Keychron K3 Pro vs K4 Max Differences Side by Side

This comparison is for buyers choosing between a compact low-profile keyboard and a fuller 96% layout. The K3 Pro weighs 525 g and measures 306 x 116 mm, while the K4 Max weighs 1290 g and measures 391 x 140 mm. Both support Bluetooth and wired use, QMK, VIA, and hot-swapping, so the main trade-off is portability and low-profile typing versus a larger layout and added 2.4 GHz connectivity. The K4 Max also has a larger battery and sound-dampening foam layers.

Model
	87	87	Select a keyboard to compare
Rating	4.7 stars (54 reviews)	5.0 stars (1 reviews)
Purchase Options
Main differences	Released in 2022 Features a low-profile design Available in a 75% layout Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI layout standard Connects via USB-C Uses a Tray Mount mounting style Supports Bluetooth, Wired, Wireless connectivity Equipped with a 1550 mAh battery Weighs about 525 g Sized at 15 x 306 x 116 mm Made with a Aluminum, Plastic, ABS case Features ABS, PBT keycaps Offers Yes, Rgb, South-face, Rgb South-face, White, North-face, Rgb North-face, White North-face RGB lighting	Released in 2025 Available in a 96% layout Built with the ISO, ANSI layout standard Includes screw-in stabilizers Has built-in sound dampening Uses a PCB Mount mounting style Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 4000 mAh battery Weighs about 1290 g Sized at 31 x 391 x 140 mm Made with a ABS case Features PBT keycaps Offers Yes, Rgb, South-face, Rgb South-face, White, White South-face RGB lighting
Score	Scores Performance: 81.1 Build Quality: 81.4 Productivity: 79.9 Customizability: 88 Portability: 76.9	Scores Performance: 82.1 Build Quality: 80.5 Productivity: 89.5 Customizability: 91.7 Portability: 50.6
Name	Name Keychron K3 Pro	Name Keychron K4 Max
Release year	Release year 2022	Release year 2025
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Linear, Tactile, Clicky
Profile	Profile Low Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 96%
Layout Standard	Layout Standard ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI	Layout Standard ISO, ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 1550 mAh	Battery capacity 4000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Tray Mount	Mount Style PCB Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, South-face, White, North-face	Backlight Rgb, South-face, White, White South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum, Plastic, ABS	Case Material ABS
Keycaps Material	Keycaps Material ABS, PBT	Keycaps Material PBT
Dimensions	Dimensions 15 x 306 x 116 mm	Dimensions 31 x 391 x 140 mm
Weight	Weight 525g	Weight 1290g

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Pros and Trade-offs

Pick the Keychron K3 Pro if low-profile typing, a smaller footprint, and lighter weight are your priorities. Choose the K4 Max if you want a 96% layout, 2.4 GHz wireless, a larger battery, or wider MX-style switch options in its hot-swappable version. Both offer QMK and VIA, so layout size and physical design are the main deciding factors.

Keychron K3 Pro

+75% low-profile design, weighing 525 g and measuring 306 x 116 mm.
+Bluetooth, wired, and wireless connectivity, with Bluetooth support for up to three devices in the vendor description.
+QMK and VIA support, plus Keychron Launcher for key remapping and macros.
+Hot-swappable versions are available with Gateron low-profile mechanical switches.
+Low-profile double-shot PBT keycaps, with dye-sublimated PBT on the Special Edition.

−Its 1550 mAh battery is smaller than the K4 Max's 4000 mAh battery.
−The vendor limits hot-swap switch compatibility to Gateron low-profile mechanical switches.
−The vendor specifies 1000 Hz polling in wired mode, while listing a lower wireless polling rate.

Keychron K4 Max

+96% layout with Bluetooth, 2.4 GHz, and wired connectivity.
+4000 mAh battery, with the vendor listing up to 190 hours of use.
+Hot-swappable version supports almost all 3-pin and 5-pin MX-style mechanical switches, according to Keychron.
+Includes IXPE, PET, and EPDM acoustic foam layers, plus a steel plate.
+Double-shot PBT keycaps and south-facing RGB lighting.

−At 1290 g and 391 x 140 mm, it is considerably larger and heavier than the K3 Pro.
−Its 96% layout takes up more desk space than the K3 Pro's 75% layout.
−The case material is listed as ABS, without an aluminum frame listed for this model.

Which Keyboard Is Better for Your Needs?

The K4 Max has the edge for gaming where 2.4 GHz wireless matters, and for desk use that benefits from its 96% layout. Its broader MX-style hot-swap support also makes it more flexible for switch changes. The K3 Pro is the more travel-friendly choice because it is lighter and smaller. For content creation, the choice depends on whether you prefer a fuller layout or a more compact board, since both offer multimedia keys and remapping features.

GamingKeychron K4 Max

•The K4 Max supports 2.4 GHz wireless with a 1000 Hz polling rate, as well as wired use at 1000 Hz.
•The K3 Pro lists a 1000 Hz polling rate, but its vendor description specifies that rate for wired mode.

OfficeKeychron K4 Max

•The K4 Max's 96% layout offers more keys than the K3 Pro's 75% layout.
•The K4 Max includes IXPE, PET, and EPDM acoustic foam layers and a steel plate.

ProgrammingKeychron K4 Max

•Both keyboards support QMK and VIA, plus key remapping and macros through Keychron Launcher.
•The K4 Max supports hot-swapping with almost all 3-pin and 5-pin MX-style switches, while the K3 Pro is limited to Gateron low-profile mechanical switches.

TravelKeychron K3 Pro

•The K3 Pro weighs 525 g, compared with 1290 g for the K4 Max.
•The K3 Pro's 75% layout and 306 x 116 mm dimensions make it the smaller of the two keyboards.

ModdingKeychron K4 Max

•The K4 Max hot-swappable version supports almost all 3-pin and 5-pin MX-style switches.
•Both models support QMK, VIA, and hot-swapping, while the K3 Pro's vendor description limits switch compatibility to Gateron low-profile mechanical switches.

Content CreationTie

•Both keyboards have multimedia keys, QMK support, and key remapping and macro features through Keychron Launcher.
•The K4 Max provides a 96% layout, while the K3 Pro is smaller with a 75% layout.