Eliza, a VN about an AI counseling program, the people who develop it, and the people who use it. (Released Aug 2019, so no generative AI used)

I remember this! The concept and worldbuilding was awesome and the story was decent. Way different from what I expected from the guy who makes puzzle games.

Basically, 20 minutes into the future, a company has created a therapist AI and employs human proxies - it looks like you’re talking to a human therapist, but they’re only allowed to say what the AI tells them to.

The MC was one of the AI’s lead developers, but she fell into a depression and started questioning her role. She quits and becomes a proxy on the down low to better understand what she made and what it means for society.

There’s an overarching plot where you follow her on that journey and meet people with different motivations and viewpoints on the technology, and the story is fair to all of them.

But the real draw is the “therapy” sessions. The patients feel so real, and you (and the MC) get to choice between repeating the AI’s lines or speaking up.