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Head to head · Prices checked Nov 12, 2026

Keychron K3 Ultra vs K5 Pro

Get the Keychron K3 Ultra for the 2,600 mAh battery and the 8,000 Hz polling rate.

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Quick verdict

Which one should you get?

Get the

Keychron K3 Ultra

Battery

Build quality in the top 30% of 75% boards under $150.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • Missing ISO-DE, ISO-UK, ISO-Nordic. The other board is sold in those layouts.
  • No numpad.

Get the

Keychron K5 Pro

Build quality in the top 15% of 100% boards under $150.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

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 K3 Ultra

Keychron K5 Pro

  • Layout size

    75%

    100%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

    Wireless for several devices and wired for lower latency

  • Battery

    2,600 mAh

    2,000 mAh

    A larger battery means fewer cables during the day

  • Max polling rate

    8,000 Hz

    1,000 Hz

    Higher polling helps competitive FPS and does nothing for typing

  • Case material

    ABS, Wood

    ABS, Aluminum, Plastic

KeebFinder scores

How we score
  • Keychron K3 Ultra
  • Keychron K5 Pro
Performance
86
79
Build quality
75
78
Productivity
89
82
Customizability
86
89
Portability
82
55

What they share

  • Hot-swappable
  • Low profile
  • Switch options: Clicky, Linear, Tactile
  • QMK
  • VIA
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 K3 Ultra

4.3

9 owner reviews

Praise
“Portable, match my minimalist setup, great feeling, high quality, durable”
Stark L.· via Keychron
Critique
“Meh. I dont like the wood grain and they make it difficult to return or exchange”
Magda V.Verified buyer· via Keychron

Keychron K5 Pro

4.8

8 owner reviews

Praise
“I love my new keyboard! It's the typing experience I've been seeking.”
AdrienneVerified buyer· via Keychron

Full specs

Keychron K3 Ultra vs K5 Pro specs

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

12 of 26 specs differ

Keychron K3 Ultra

Keychron K5 Pro

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Plate Mount
Tray Mount

Low profile

Yes
Yes

Sound dampening

Yes
No

Layout

Layout size

75%
100%

Layout standard

ANSI, ISO
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, JIS

Ergonomics

Standard
Standard

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired

Max polling rate

8,000 HzBetter
1,000 Hz

Battery

2,600 mAhBetter
2,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS, Wood
ABS, Aluminum, Plastic

Plate material

Aluminum
—

Keycaps

PBT
ABS, PBT

Weight

—
720 g

Dimensions

—
18 x 120 x 435 mm

Typing angle

—
3°

Backlight

RGB, north-facing
RGB, north-facing

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2026
2023

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.

For EU buyers

ISO layouts by store

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

Keychron K3 Ultra

Keychron K5 Pro

  • Keychron

    ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW

    Out of stockShips to you

    Go to Keychron
  • Keychron (DE)

    ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW

    In stockDoes not ship to you

    Go to Keychron (DE)

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