The honest answer is that five messages tells you nothing, and that's the mistake I made for months. The way I judge it now is by coming back the next day and seeing whether the character remembers anything from the previous session. I wrote a longer
honey ai review after a couple of months with it, and the memory was the thing that separated it from everything else I'd tried – it brought up small details from days earlier without me prompting it. There's over 100 characters to choose from, plus pair setups where two of them share a scene, and voice notes are included on the free tier so you can hear the quality before paying anything. You can start without an account, which makes the initial test painless. If you want a proper way to judge one of these, that's the test I'd run first.