How to Choose Between Nuki Smart Lock Go, Pro 5th Gen, and Ultra: A Side-by-Side Comparison

Quick answer

If you want the fastest and most compact Nuki lock, choose the Smart Lock Ultra. If you need a balance of features and price, the Smart Lock Pro (5th Gen) is a solid all-rounder. For budget-friendly keyless entry on a standard door, the Smart Lock Go gets the job done.

Deciding which Nuki smart lock to buy can feel overwhelming when you're looking at the Go, Pro (5th Gen), and Ultra side by side. Each model serves a different purpose, and the right choice depends on your door type, your budget, and how you plan to use smart access day to day.

This guide breaks down the key differences in price, speed, size, and functionality. We'll help you match each lock to a specific scenario, so you can avoid paying for features you don't need or missing the convenience you actually want.

Price and value: What does each model cost?

Price is often the first filter when choosing a smart lock. The Smart Lock Go is the most affordable at USD 74.50 (compare at USD 149.00), making it a low-risk entry into keyless entry. The Smart Lock Pro (5th Gen) sits in the middle at USD 134.50 (compare at USD 269.00), while the Smart Lock Ultra is the premium option at USD 174.50 (compare at USD 349.00).

Consider what you're paying for beyond the hardware. The Ultra's higher price reflects its compact size and faster locking and unlocking. The Pro (5th Gen) offers a modern design and multiple opening methods. The Go keeps things simple, focusing on app control and easy installation. If your main goal is saving money, the Go delivers the core smart lock experience without the extra cost.

• Smart Lock Go: best for budget-conscious buyers who want app-based keyless entry.
• Smart Lock Pro (5th Gen): best for those who want a balance of price and features.
• Smart Lock Ultra: best for those who prioritize speed and a discreet footprint.

Speed and size: Why the Ultra stands out

The Smart Lock Ultra is marketed as the fastest and smallest Nuki Smart Lock. That means quicker locking and unlocking when you're in a hurry, and a design that sits closer to your door, which can be important if you have limited space or want a more discreet look. The Pro (5th Gen) and Go are larger and may not fit every door as cleanly.

Speed isn't just about convenience; it can also affect how often you use the lock. If you frequently come home with your hands full, the Ultra's faster response can make a noticeable difference. However, if your door has a standard setup and you're not bothered by a slightly bulkier lock, the Pro or Go will work perfectly well.

• Measure your door clearance before choosing; the Ultra's small size helps in tight spaces.
• If you value quick access, the Ultra's fast performance is worth the higher price.

Features and access methods: What do you get?

All three models provide keyless entry, but they differ in how you open the door. The Smart Lock Pro (5th Gen) opens via app, fingerprint, or code, giving you flexible options for different users. The Ultra and Go are controlled via smartphone app, but you can add a Keypad (USD 44.50) to any of these locks for code-based access, which is handy for guests or service providers.

Think about who will be using the lock. If you want to grant access to family members who prefer fingerprint recognition, the Pro (5th Gen) has that built in. If you're fine with everyone using a code or app, the Go or Ultra paired with a Keypad can be just as effective. For quick access without a smartphone, the Fob (USD 29.50) is a compact option that works with any Nuki Smart Lock.

• The Pro (5th Gen) includes fingerprint and code options out of the box.
• The Go and Ultra can be upgraded with a Keypad for code entry.
• The Fob is a great add-on for kids or elderly family members who don't use smartphones.

Decision rules: How to pick your Nuki lock

• Budget first: If price is your top concern and you have a standard door, choose the Smart Lock Go. You'll get reliable app-based access without the premium cost. Go is the value pick.
• Feature flexibility: If you want fingerprint, code, and app access without adding accessories, the Smart Lock Pro (5th Gen) is your best bet. It balances modern design with multiple entry methods. Pro (5th Gen) is the all-rounder.
• Speed and size: If you want the fastest locking and unlocking and the smallest footprint, choose the Smart Lock Ultra. It's worth the higher price for daily convenience. Ultra is the premium choice.

Product facts at a glance

• Smart Lock Pro (5th Gen): Opens your door via app, fingerprint, or code. Modern design and easy installation. If you want multiple ways to unlock without buying extra accessories, the Pro (5th Gen) is the most versatile straight out of the box.
• Smart Lock Ultra: Fastest and smallest Nuki Smart Lock, designed for efficient and convenient keyless entry. Speed and a discreet footprint make the Ultra ideal for busy households or doors with limited space.
• Smart Lock Go: Provides smart access without physical keys. Easy installation on standard doors. Control via smartphone app. The Go is the most budget-friendly way to start with Nuki, especially if you're comfortable using your phone as the primary key.

Which Nuki lock fits your lifestyle?

Best for

• Smart Lock Go: first-time smart lock buyers who want an affordable, simple app-controlled lock.
• Smart Lock Pro (5th Gen): households with multiple users who want fingerprint and code access without extra purchases.
• Smart Lock Ultra: tech enthusiasts who value speed and a discreet design, and are willing to pay more.

Not for

• Smart Lock Go: users who need fingerprint or code access built-in without buying a Keypad.
• Smart Lock Pro (5th Gen): those on a tight budget or with very limited door clearance.
• Smart Lock Ultra: buyers who want to minimize upfront cost or don't need ultra-fast performance.

Choosing between the Nuki Smart Lock Go, Pro (5th Gen), and Ultra comes down to your priorities: budget, features, or speed and size. The Go is the most affordable, the Pro (5th Gen) offers the most built-in access methods, and the Ultra delivers the fastest, most compact experience. Match the lock to your door and daily routine, and you'll enjoy keyless entry that fits your life.