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Quick verdict
The Ultra is Nuki's design statement. Noticeably slimmer and more refined than the Pro. Under the hood, it offers the same Matter over Thread local control that makes Nuki locks excellent for Home Assistant. The question is whether the sleeker form factor justifies the price jump over the already-capable Pro. If aesthetics matter to you, this is the best-looking smart lock you can get with local control.
Standout: Nuki's slimmest smart lock with flagship design, built-in Wi-Fi, Matter over Thread and zero cloud dependency.
Notes last checked May 31, 2026.
Compatibility snapshot
Home AssistantgoodReliable local integration with minor caveats (a hub, manual config, or polling). Core function works locally.
Apple HomegoodWell supported, with only minor gaps.
Google HomegoodWell supported, with only minor gaps.
AlexagoodWell supported, with only minor gaps.
Works offlineyes
Setupmoderate
Extra hub neededno
Powerbattery
Local control facts
Home Assistant: matter integration, Local Push (home-assistant.io, checked Sep 10, 2026)
Why it stands out
ultra-slim design is significantly smaller and sleeker than the Pro model
Matter over Thread provides fully local control with no hub or bridge needed
most expensive Nuki lock with flagship pricing to match the flagship design
Euro-profile or round cylinder only, so it is not a drop-in for a US single-cylinder deadbolt; US buyers need the separate Nuki Smart Lock (Deadbolt) model instead
newer model with less community feedback compared to the established Pro line
Best for
design-conscious European smart home users who want the slimmest possible lock
Home Assistant users who prioritize aesthetics alongside local Matter control
Avoid if
the Pro model meets your needs. The Ultra's main advantage is the slimmer design
you have door hardware that the available Nuki adapters do not fit
Privacy and local-control notes
Fully local via Matter over Thread. Nuki cloud is optional. No account required for core lock functionality.
Home Assistant support: supported · integration path: Matter.
Buying reality check
Price notes: Top-tier pricing even for Nuki. The premium is mostly for the ultra-slim industrial design.
Verified price reads: lowest seen $359, latest $359 on Sep 9, 2026.
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