Keychron K3 Ultra 8K vs Keychron K5 Pro
Keychron K5 Pro is the cheaper pick at $89.24, roughly 19% under Keychron K3 Ultra 8K ($109.99). Keychron K5 Pro offers more keys for full-layout workflows, while Keychron K3 Ultra 8K trims the footprint. The right pick comes down to which spec trade-offs fit your build — the pick-if grid below breaks that out in detail.
Detailed comparison
Spec-by-spec breakdown — differences highlighted in cyan.
| Spec | Keychron K3 Ultra 8K | Keychron K5 Pro |
|---|---|---|
| Name | Keychron K3 Ultra 8K | Keychron K5 Pro |
| Brand | Keychron | Keychron |
| Price range | $109.99 | $89.24 |
| Community score | — | — |
| Form factor | 75% | Full-size (100%) |
| Key count | 84 | 108 |
| Hot-swap | Yes | Yes |
| Supported switch pins | 3, 5 | 3, 5 |
| Case material | Aluminum 6063 | — |
| Plate material | — | — |
| Mounting style | — | — |
| Connectivity | Wired USB-C, Bluetooth (5.0+), 2.4GHz wireless (dongle) | Wired USB-C, Bluetooth (5.0+) |
| RGB lighting | No | Yes |
| Layouts supported | ANSI | ANSI |
| QMK support | No | Yes |
| VIA support | No | Yes |
| Weight (g) | — | — |
| Polling rate (Hz) | — | — |
Name
- Keychron K3 Ultra 8K
- Keychron K3 Ultra 8K
- Keychron K5 Pro
- Keychron K5 Pro
Brand
- Keychron K3 Ultra 8K
- Keychron
- Keychron K5 Pro
- Keychron
Price range
- Keychron K3 Ultra 8K
- $109.99
- Keychron K5 Pro
- $89.24
Community score
Form factor
- Keychron K5 Pro
- Full-size (100%)
Key count
Hot-swap
Supported switch pins
- Keychron K5 Pro
- 3, 5
Case material
- Keychron K3 Ultra 8K
- Aluminum 6063
Plate material
Mounting style
Connectivity
- Keychron K3 Ultra 8K
- Wired USB-C, Bluetooth (5.0+), 2.4GHz wireless (dongle)
- Keychron K5 Pro
- Wired USB-C, Bluetooth (5.0+)
RGB lighting
Layouts supported
- Keychron K5 Pro
- ANSI
QMK support
VIA support
Weight (g)
Polling rate (Hz)
Which should you buy?
Keychron K5 Pro is the cheaper pick at $89.24, roughly 19% under Keychron K3 Ultra 8K ($109.99). Keychron K5 Pro offers more keys for full-layout workflows, while Keychron K3 Ultra 8K trims the footprint. The right pick comes down to which spec trade-offs fit your build — the pick-if grid below breaks that out in detail.
Pick Keychron K3 Ultra 8K if
From $109.99
- You want a 75% layout
Pick Keychron K5 Pro if
From $89.24
- You want a full-size (100%) layout
- You want per-key RGB lighting
- You're on a tighter budget
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