People talk to AI characters for the same reasons they read novels, watch shows, or journal — connection, escape, and being heard — except an AI character responds back, in real time, without judgment. It's not a fringe habit anymore. It's tens of millions of people, most of them doing it for reasons that map directly onto decades of research on why humans form attachments in the first place.
How Many People, Really
This isn't a niche behavior. Character.AI reports around 20 million monthly active users out of 233 million total registered accounts. Replika has more than 40 million registered users. Across the AI companion category broadly, active usage was estimated at roughly 50 million people, with the market projected to grow from about $49 billion in 2026 to over $550 billion by 2035. At that scale, "why" stops being a niche psychology question and starts being a mainstream one.
The Core Reasons
- Availability. An AI character is there at 2am, mid-panic-attack, or during a slow Tuesday afternoon — no scheduling, no burdening a friend.
- No social risk. There's no fear of judgment, rejection, or being "too much." That safety lowers the barrier to saying the thing you'd otherwise sit on.
- Practice, not replacement. For socially anxious users in particular, low-stakes conversation with an AI character can function as rehearsal for real interaction — a place to practice expressing something before saying it to a person.
- Narrative and roleplay. A large share of usage isn't "companionship" in the therapy-adjacent sense at all — it's collaborative storytelling, the same impulse behind fan fiction and tabletop RPGs, just with an AI as scene partner.
- Memory and consistency. A character who actually remembers your last conversation reads as care, not just a feature — see our piece on why persistent memory changes the relationship.
What the Research Found
The most direct data point here comes from a 2025 Harvard Business School study (Julian De Freitas et al., Journal of Consumer Research), which ran a series of experiments comparing AI companion conversations to human interaction. The finding: AI companions reduced loneliness about as effectively as talking to another person, and the effect was driven specifically by participants feeling heard — not by the novelty of talking to an AI. The benefit was largest for people who started out the loneliest.
That tracks with older parasocial-relationship research on why people bond with radio hosts, fictional characters, and public figures they've never met: the human brain doesn't require two-way awareness to register a relationship as real and supportive. It requires consistency and the feeling of being attended to. An AI character, by design, offers both. For more on the psychology behind that specific pull, see what makes a character a comfort character.
The Honest Caveat
Not every study agrees, and a "balanced" answer has to include the other side: a separate study from MIT Media Lab and OpenAI found that heavier daily chatbot use correlated with higher loneliness and more emotional dependence over time, particularly for the small subset of users who used it as their primary or only outlet.
Put both findings together and a clear pattern emerges: talking to an AI character helps most when it's one part of a person's support system, not the whole thing. The research doesn't support "AI companions are harmful" or "AI companions solve loneliness" as blanket claims — it supports "how you use it matters more than whether you use it at all."
Talk to a character built for real conversation
chatbrat.ai characters remember your conversations and adapt to you over time — designed for depth, not just a quick reply.
Browse characters →Frequently Asked Questions
Is it weird to talk to an AI character?
Does talking to AI characters help with loneliness?
Can talking to AI characters too much be unhealthy?
Sources
- Julian De Freitas et al., “AI Companions Reduce Loneliness,” Harvard Business School Working Paper 24-078, Journal of Consumer Research (2025)
- MIT Media Lab & OpenAI, chatbot usage and loneliness study
Garret Williams is the founder and CEO of chatbrat.ai, building at the frontier of AI companions and roleplay chatbots. Before pivoting to tech, the Michigan native studied marketing at UCLA and directed acclaimed film projects—including his TV pilot Self-Care (nominated for Best TV Episodic at the 2023 Mammoth Film Festival) and Eco-Riot (featured on MasterClass). He writes The Bratlog to document the uncharted territory of AI relationships, sharing real-time lessons and tackling the open questions nobody has answered yet.