Compare
Pick two boards from the directory and see how they differ.
Shaded rows are where they differ.
| Spec |  Keychron Keychron K3 Ultra 8K $110 “K3 Ultra 8K, from Keychron's store” |  Keychron Keychron K3 Max $90–$110 “K3 Max, from Keychron's store” |
|---|---|---|
| Price , different | $110 | $90–$110 |
| Size | 75% | 75% |
| Type | Pre-built | Pre-built |
| Connectivity | Wireless + Wired | Wireless + Wired |
| Released , different | 2026 | 2023 |
| Mounting , different | Tray Mount | Integrated Plate |
| Case , different | Aluminum + Wood | ABS with aluminum frame |
| Colors , different | Black, White, Black(ISO-German), Black(ISO-UK), Black(ISO-Nordic) | Black, White, White Gray |
| Weight , different | 566 g +/- 10 g | 525 g |
| Dimensions , different | 320.62 x 126 mm | 306 x 116 mm |
| Typing angle | Not listed | Not listed |
| Front height | Not listed | Not listed |
| Switches | Low Profile | Low Profile |
| Profile | Low Profile | Low Profile |
| Keycaps , different | LSA double-shot PBT keycaps, non-shine-through | Low-profile double-shot PBT |
| PCB | Hot-swap | Hot-swap |
| Plates , different | Aluminum | Not listed |
| Battery , different | 2600 mAh, up to 550 hours | 1550 mAh, up to 73 hours |
| Compatible switches | Keychron low-profile | Keychron low-profile |
| Software , different | ZMK, Keychron Launcher | QMK, VIA, Keychron Launcher |
| NKRO | Yes | Yes |
| RGB | Yes | Yes |
| Features , different | 75% layout, Tri-mode, Hot-swap, ZMK, Low profile | 75% layout, Tri-mode, Hot-swap, QMK/VIA, Low profile |
| Good for , different | Players and typists who want the best slim 75% on paper People who dislike charging often Travelers who want a premium low-profile board | Travelers who want a thin, dongle-equipped 75% QMK/VIA users who need a low-profile board People who split time between a PC and a tablet |
| Skip if , different | QMK/VIA users who want to keep that firmware Buyers who need a standard-height board Anyone who wants to remap through desktop software only | Anyone who wants a rich, deep sound Gamers who want 8 kHz or Hall-effect features Buyers who want an all-day desk board |
| Pros , different | 8000 Hz polling and 2.4 GHz wireless (maker, Tom's Hardware) Battery rated up to 550 hours; Tom's Hardware found battery life exceptional Well-damped, tray-mounted with real wood accents (Tom's Hardware) Excellent Keychron-made switches, per Tom's Hardware Two-level flip-up feet and PBT keycaps | 2.4 GHz at 1000 Hz, Bluetooth and wired (maker) SemiPro found the dongle connection stable QMK/VIA and PBT keycaps Foam improved sound slightly over the K3 Pro (SemiPro) Very thin and portable (Trusted Reviews) |
| Cons , different | Runs ZMK rather than QMK/VIA Software is online-only (Tom's Hardware) Rosewood finish is not the best (Tom's Hardware) Keycaps are good but not perfect (Tom's Hardware) Review listed an early crowdfunded unit; shipping versions may differ | Stabilizer rattle, especially on the space bar (SemiPro) Shorter battery life than the K3 Pro (SemiPro); rated up to 73 hours by Keychron Low-profile switch and keycap compatibility is limited (Gadgetoid) Trusted Reviews says it is niche Thin build means no wrist rest comfort (Trusted Reviews) |
| Research take , different | The standout slim 75%, according to Tom's Hardware. The firmware switch is the main catch. | The thin travel board with a dongle. Stabilizers are a known weakness. |