DreamGen

DreamGen is an AI chat tool for people who want to write stories, not just have conversations. It lets you build detailed scenarios with multiple characters that all remember what's happening. There are no content filters, so your space opera or noir detective tale can go in any direction

You can run several AI characters in the same scene, and they'll interact with each other and the world you've built. The memory system is good, keeping track of plot points and character traits over long sessions.

Plans start with a free tier with daily limits. Paid subscriptions remove those caps. They sometimes run promotions, so it's worth checking their site for coupon codes. If you're bored with standard chatbots and want to craft a proper narrative, this is the tool for it.