1Password - Intelligent password same pattern and length

Large numbers are often not easily comprehensible for us, but yeah, we're talking about astronomical numbers here so even with a certain pattern it is still not feasible to crack a password like our smart passwords generator suggests.

Seems like the generator could still strike out by chance if it produced all lowercase (or all uppercase) letters or if it produced only numbers and no symbols or vice versa. Not likely but possible.

The pattern in the smart passwords generator dictates there has to be a mix of lowercase and uppercase letters, digits and symbols, so it will not generate one without all of these requirements.

Furthermore, the smart passwords generator will attempt to read the website's requirements, if such exists in the HTML code of the password field, and will adjust the smart password accordingly.
Not only that, but the smart passwords generator also relies on open databases of websites passwords requirements such as https://github.com/apple/password-manager-resources and our own database to tell whether a website has unique requirements, what they are and how to adjust the suggested password accordingly.

So if you get to a website that does not provide 1Password information from any of the sources above, 1Password will fall back to the default pattern you initially wrote here. But you will probably encounter some websites where it offers a completely different random password without that pattern if that website is affected by the above resources. That is why it is called the smart passwords generator :)