Character.AI chats are private from other users, not from the company. The privacy policy says user content, including chat communications, is collected and used to train and improve models, and there is no documented way to keep using the platform while opting out of that. If 'private' means 'nobody but me can read it', a cloud chatbot cannot give you that.
Short answer: your Character.AI chats are private from other users, and not private from Character.AI.
That distinction is the whole article, because the two meanings get blurred every time this question comes up. I write a local AI companion for exactly this reason, so yes, I have a horse in this race. The receipts below are from Character.AI’s own published policy; check them yourself.
What “private” actually covers on Character.AI
Other users cannot read your conversations. Even if you chat with a public character that thousands of people use, your session with it is yours. For the social meaning of privacy, the embarrassing one, Character.AI delivers.
The company is a different story. According to the Character.AI privacy policy (also mirrored in their help center), the service collects the information you provide directly, the data generated by your use of the service (like usage data and IP address), and your “user content”: the characters you create, images you post, and your chat communications.
Collected is the operative word. The conversation you think of as an intimate late-night talk is, on the other side of the API, product data.
Your chats help train the models
The policy states the collected information is used to analyze, maintain, improve, and customize the services, including training AI and machine learning models. Chat content is part of that pipeline.
Two things follow from this:
- There is no documented opt-out that keeps the service usable. As of July 2026, I could not find a setting or process that lets you keep chatting while excluding your conversations from model improvement. If they add one, I will update this post.
- Deletion is not un-training. Even where you can delete chats or your account, a model that already learned from your data does not forget it the way a database drops a row.
The policy also says Character.AI does not sell personal information, and I have no reason to doubt that. But it does share data with service providers, consultants, and vendors for moderation, analytics, maintenance, and security. Normal cloud practice. Also: more humans and systems in the loop than the word “private” suggests.
Why this is not a Character.AI scandal
Nothing above is hidden or unusual, and that is the uncomfortable part. Replika, Nomi, Kindroid, and every other cloud companion have structurally similar policies, because the architecture demands it: your words must travel to their servers to be processed at all. Once the data is there, using it to improve the product is what every product company does. I compared the categories in more depth in the cloud privacy post and the Character.AI comparison page.
The question worth asking is not “is this company evil” (no) but “does this architecture allow the thing I want” and for the strong meaning of private, the answer is no. A cloud chatbot can promise good behavior. It cannot promise that your conversations exist nowhere but your own machine, because existing on their machines is how it works.
What actually-private looks like
Flip the architecture and the policy questions evaporate. A local companion runs the model on your own hardware:
- Your words are processed on your CPU and GPU and stay on your disk.
- It works with Wi-Fi off, which is not a feature but a proof: nothing needs to leave.
- There is no server-side dataset of you to train on, subpoena, breach, or share with vendors.
- No account, so there is no identity to attach the conversations to.
That is how Local Waifu is built. Not because we wrote a nicer policy, but because the private version of this product is the one where your conversations physically cannot reach us. Whether your machine can run it is answered on the requirements page, and what it costs (once, not monthly) is on the pricing page.
Keep enjoying Character.AI for what it is: a creative playground with excellent characters, private from other users. Just do not tell it anything you would not put in product data. For the conversations that deserve the strong meaning of the word, keep them on your own silicon.
Questions people ask
Can other users see my Character.AI chats?
No. Your conversations with a character are not visible to other users, even when the character itself is public. Private-from-other-users is the part Character.AI does deliver.
Does Character.AI use my conversations for training?
The privacy policy states collected information, which includes your chat communications, is used to improve the services and train AI and machine learning models. As of July 2026 I could find no documented way to opt out of training while continuing to use the platform.
Does Character.AI sell my data?
The policy says it does not sell personal information. It does share data with service providers and vendors who work on things like moderation, analytics, and security, which is standard for cloud services but still means humans outside the company you signed up with can process your data.
What is the actually private alternative?
Run the AI on your own machine. A local companion processes your words on your own hardware, works offline, and never sends conversations anywhere. Privacy stops being a policy promise and becomes a physical property.
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