Free? Not an artificial intelligence, but this ELIZA clone mimics one and is made with an early version of App Inventor that replicates the original ELIZA program.
Why any ChatGPT alternative probably
will not be free:
- requires a server (and servers can be expensive to operate and maintain)
Sorry Chris, there are probably none available yet and won't be in the future.
What do you intend to do with the chat program you build?
In the meanwhile you might be happy with an App Inventor Chat program CloudDB Chat App