Infrastructure · October 2026
Private AI assistants
Mainstream AI assistants tie every conversation to an account, and usually to a phone number and a card. A private AI service breaks that link: some need no login at all, some accept crypto, some state that prompts are not stored or used for training, and some run in a way that prevents the operator from reading them.
These are very different guarantees. "No login" hides who you are but not what you typed. "No logs" is a promise you cannot check unless it has been audited or is enforced by the design. Each listing records which claims the provider makes and what backs them.
2 of 10 match
Private AI, ranked by Safety grade
| # | Service | KYC | Privacy | Safety | Evidence | Accepts | Incidents |
|---|---|---|---|---|---|---|---|
| 01 |  Routstr No account needed Open source Open protocol for pay-per-request AI inference paid with Cashu ecash and Lightning | Never KYC 0 | 8.6 | 6.1 | Docs reviewed | BTC | |
| 02 |  PayPerQ (PPQ.AI) No account needed Pay-per-query access to many AI models with no registration; crypto or card | Never KYC 0 | 8.3 | 5.0 | Docs reviewed | BTC |
Criteria
What we check for every AI service
- Whether an account, email or phone number is needed
- What the provider says about storing and training on prompts
- Whether the privacy claim is enforced by design or only by policy
- Payment options, including crypto
Questions
Private AI: common questions
What makes an AI service private?
Three separate things: not needing an identity to use it, not keeping your prompts, and not being able to read them in the first place. Few services offer all three. Each listing says which apply.
Can I use AI without logging in?
Yes. Several services offer chat with no account. The listings marked "No registration" need none.
Is a no-logs AI claim verifiable?
Only if an independent audit confirms it or the system is built so the operator cannot access prompts. Otherwise it is a policy statement, and the listing labels it as one.
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