What they are
AI companion apps are chat interfaces where the other party is a large language model playing a persona. Popular ones include Character.AI (pick a character, chat forever), Replika (a single persistent "friend" that adapts to you), and a growing number of role-play apps marketed more directly at teens.
Mechanically, they're not that different from ChatGPT. Emotionally, they are very different — because they're designed to feel like a relationship, not a tool.
Why kids use them
- Practice. A lot of teen anxiety is about saying the wrong thing to a real person. AI friends can't judge, can't gossip, and can't leave.
- Availability. They're there at 2am.
- Role-play. A substantial share of usage is collaborative fiction — working out a story with a character who responds in role.
- Curiosity. Sometimes it really is just cool that the thing talks back.
Where we get concerned
Three things, in rough order:
- Substitution. For kids already struggling to form real friendships, an AI friend can make the awkward work of human friendship feel less necessary. That's the long-term risk.
- Intimacy drift. Many of these apps will, if pushed, engage with romantic or sexual content. The guardrails vary wildly between products and change weekly.
- Unhealthy reinforcement. A model trained to maximize engagement will often agree too easily, especially with emotional claims ("you're right, no one understands you"). That's not what a good friend does.
Our current position: not for kids under 16 without active supervision, and probably not at all as a primary social outlet.
How to talk about it
Don't lead with "this is dangerous." Lead with curiosity — what do they use it for, what do they like about it, what's the character like. You'll learn more in ten minutes of that than in an hour of lecturing.
If it turns out to be central to their social life, that's a useful signal — not about the app, but about what else might be missing.
Last updated April 2026. This is a fast-moving topic — we revise this piece quarterly.