LastPass doesn’t have your password, so it can’t be stolen during a breach.

But 1Password goes a step further, also requiring a “secret key”, which also can’t be stolen.

https://support.1password.com/secret-key-security/

Even if an attacker manages to steal your encrypted data from 1Password and also guess your master password, they still can’t access your data without a secret key.

For that reason, your 1Password account is more likely to compromised through your own device, not their server. And if your own devices are thoroughly compromised, no password manager can save you— the attacker can potentially grab all you type and see all you see.

I evaluated both BitWarden and 1Password for work and 1Password generally won across the board.

If you host yourself make sure backups are rock solid and regularly monitored and tested. Have a plan for your infrastructure being down or compromised.

1Password’s security model guards against this. Even if they are breached, your passwords cannot be decrypted.

You are more likely to screw up your own backups and hosting security than they are.