I'm referring to Bitwarden Authenticator, which stores TOTP secrets and displays 6-digit codes like Google Authenticator does.[1] This feature requires a Bitwarden Premium account, with the $10/year plan being the cheapest option.[2] (Self-hosting through Vaultwarden is another option.[3])
This is separate from having TOTP 2FA on the Bitwarden account itself, which is available on the free plan.[4]