If you run a business, you know how hard it is to keep up with the phone ringing while trying to help the person standing right in front of you. When looking into AI to handle those conversations, you might weigh Stella against Replicant. Replicant gets used by large companies to automate massive customer service call centers, plugging into complex enterprise software to resolve support tickets. Stella gets used by everyday businesses to answer regular phone calls, like taking messages or explaining booking policies, and to greet walk-in visitors with a physical kiosk. It comes down to your operation size.