If you're looking for a different alternative to Charstar, Inworld Arcade is another good option. It's got a broad range of AI characters in several categories like Original Creations, Assistants, Famous Figures and Interactive Adventures. It's got daily updated picks of the best characters, so you can get a different flavor of the AI personalities. And developers can build and share their own AI characters using the Character Engine and Docs, so it's good for both consumers and creators.
Another interesting option is AskNow, which offers audio conversations with a range of avatars, both real and fictional and historical figures. The service offers high-quality, lifelike conversations and works on desktop and mobile devices. You can pay for up to 50 minutes of conversation per month, and it's good for personal and professional use.
If you want something more personal and immersive digital communication, Yepic AI could be the way to go. It's a collection of tools to generate AI avatar videos and let you chat with them. The service includes options like facial recognition, contextual answers and multilingual support, so it's good for things like education and customer support. You can try it out with a free trial.