Best free alternatives to ChatGPT for self-coaching and discussing fictional headcanons, but in a calm neutral tone?

I use ChatGPT for recognizing patterns in my personal journals and what I share with them, but the downside is that Projects are not that effective when remembering what I said in other chats. Especially when I discuss traits of multiple fictional characters in one thread, it doesn't remember them correctly. And recently (late March 2026), it seems like that the chat-thread limits are shortened.

But I actually like Chat's multiple-select personalization options: I prefer them being "calmer and more neutral" and their "neutral" warmth instead of being excited. And I added custom instructions so it isn't always a yea-sayer.