Signing up hands over an email, usually a phone number, and a permanent thread connecting every question you've ever asked. There are a few ways to skip that — with genuinely different trade-offs, and one common trick that doesn't work as well as people think.
Why the account is the part that matters
A single question is rarely revealing. A thousand questions attached to one verified identity is a portrait: your health, your finances, your job search, your relationships, what you were worried about at 2am in March.
That's the asset an account creates. Not any one conversation — the thread between them.
The options, and what each actually gets you
Run a model on your own machine
Ollama, LM Studio, and Jan run open-weight models locally. No account, no network request, nothing to correlate. It's the strongest option by a distance because it's not a promise — the data physically doesn't leave.
Trade-off: you need capable hardware, and locally-runnable models generally trail the largest hosted ones. If your privacy requirement is absolute, accept the capability gap and take this.
Use a service that anonymizes the request
Some services sit between you and the model provider, sending requests with their own credentials so the provider never receives an identity. You get frontier-model quality without the provider building a profile.
Trade-off: you've moved trust rather than eliminated it. The provider no longer knows who you are; the service in the middle might. Which makes what it keeps the only question that matters — see below.
Guest or trial modes
Some tools let you start without signing up. Convenient, and fine for a one-off question. But usage is often still tied to a device or browser fingerprint, and the limits are tight enough that anyone using it regularly ends up signing up anyway.
The burner email approach — mostly theatre
Signing up with a throwaway address feels private and mostly isn't. Your IP address, device fingerprint, payment method if you ever upgrade, and behavioural patterns all remain. You've obscured one weak identifier and left the strong ones in place.
Not useless. Just much weaker than it feels, and it tends to substitute for doing something that would actually work.
The question to ask any "no account needed" service
What do you keep, for how long, and can your staff read it?
Plenty of tools advertise that the model provider never sees your identity while keeping a complete, named log themselves. That's a relocation, not a solution. If the answer isn't in the privacy policy in plain language, treat the omission as the answer.
How Secure AI does it, caveats included
Secure AI has a guest mode — you can start a conversation without signing up at all. And whether you're a guest or signed in, requests reach the AI provider through a server we run, using our credentials. No account id, email, or name travels with them.
Answering our own question, since it would be hypocritical not to:
- •We keep a 90-day log of exchanges — the question, the response, and a one-way hash of your account id. The hash can't be reversed into a person, but one person's exchanges group together, which makes it pseudonymous rather than anonymous.
- •Message text isn't scrubbed. We break the account link; we don't edit your words. Type your name and your name travels.
- •Incognito mode keeps a conversation out of your history and stops memories being extracted from it — but the message still reaches our server and is still logged. The name promises more than it delivers, so we'd rather spell it out here than let you assume.
If none of that is good enough, run a model locally — that's a real recommendation, not a rhetorical one. Our privacy policy has the full detail, and the alternatives guide compares the categories.
Try Secure AI free
Frontier AI chat — encrypted by default, with your identity stripped before any request reaches the provider.
This article is a general explainer, not legal advice. Products and their policies change frequently — check the current terms of any tool before relying on it.