Head to head · Prices checked Nov 10, 2026

Keychron K15 Max vs K2 Ultra

Get the Keychron K2 Ultra for the 4,000 mAh battery and the 8,000 Hz polling rate.

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Keychron K15 Max

4.9 (16)4.9 · 16 reviews

from$99at Keychron

Compare 3 stores

Battery

Keychron K2 Ultra

5.0 (3)5.0 · 3 reviews

from$119at MK

Compare 4 stores

Quick verdict

Which one should you get?

Get the

Keychron K15 Max

Build quality in the top 15% of 75% boards under $100.

Rules this board out

Low-profile switches and keycaps only. Standard MX keycaps will not fit.
No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

$99 at Keychron

Get the

Keychron K2 Ultra

Battery

Build quality in the top 10% of 75% boards under $150.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

$119 at MK

What actually differs

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 K15 Max

Keychron K2 Ultra

Battery
2,000 mAh
4,000 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Ergonomics
Alice
Standard
Max polling rate
1,000 Hz
8,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Mount style
PCB Mount
Gasket Mount

KeebFinder scores

How we score

Keychron K15 Max
Keychron K2 Ultra

Performance: 81
90
Build quality: 80
86
Productivity: 93
94
Customizability: 88
92
Portability: 79
82

What they share

Layout size: 75%
Connection: Bluetooth, 2.4 GHz, Wired
Hot-swappable
Case material: ABS, Aluminum
Switch options: Clicky, Linear, Tactile
QMK

See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Keychron K15 Max

4.9

16 owner reviews

Praise

“This keyboard is perfect for me. Combined with the side-scrolling mouse I purchased, it does everything I need it to do, and is extremely comfortable to use all day.”

JamesVerified buyer· via Keychron

Keychron K2 Ultra

5.0

3 owner reviews

Praise

“very compact, build quality is great, and I don't even feel any latency when using the keyboard wireless.”

AnonymousVerified buyer· via Keychron

Full specs

Keychron K15 Max vs K2 Ultra specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

11 of 27 specs differ

Spec

Keychron K15 Max

Keychron K2 Ultra

Typing & switches

Switch options

Clicky, Linear, Tactile

Hot-swappable

Yes

Mount style

PCB Mount

Gasket Mount

Low profile

Yes

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

75%

Layout standard

ANSI

ANSI, ISO, ISO-ES, ISO-FR, ISO-IT

Ergonomics

Alice

Standard

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz

8,000 HzBetter

Battery

2,000 mAh

4,000 mAhBetter

USB-C

Yes

Build & materials

Case material

ABS, Aluminum

Plate material

—

Steel

Keycaps

PBT

Weight

700 g

1,084 g

Dimensions

29 x 370 x 143 mm

31 x 312 x 122 mm

Typing angle

3°

—

Backlight

RGB

RGB, south-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2024

2026

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Keychron K15 Max

No ISO layout at the stores we track.

Keychron K2 Ultra

Keychron (DE)
ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you

Where to buy

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 K15 Max3 stores