Here's what made me switch. NanoGPT discards every prompt and response after each interaction. No logs, no training on your data, no employee access to your conversations. Compare that to OpenAI, which keeps everything for at least 30 days and uses it for training by default. That difference alone was enough for me.
How the Big AI Companies Handle Your Data
When you use ChatGPT directly, OpenAI keeps every conversation. Their terms let them use your chats for model training unless you opt out. Even then, they hold your data for 30 days for "safety monitoring." Google and Anthropic do something similar.
Your business plans, medical questions, legal queries, code, personal conversations, all sitting on corporate servers. OpenAI employees can review them. Governments can subpoena them. Breaches can leak them. That's not theoretical; it's happened.
I started thinking about this more seriously after a friend who works at a law firm told me they can't use ChatGPT for client work because of the data retention policies. That's when I started looking for alternatives.
What NanoGPT does differently
NanoGPT takes a fundamentally different approach. Instead of building a service around your data, they pass your prompts straight through to the model providers and don't keep anything. Here's the breakdown:
No Data Storage
Your prompts and responses get discarded after the interaction. Nothing sits on their servers afterward.
No Training on Your Chats
Nothing you send goes into any model training pipeline. Period.
No Account Linking
Your NanoGPT usage isn't tied to your OpenAI, Google, or Anthropic accounts. They have no idea who you are.
Anonymous Payments
Pay with crypto if you want full anonymity. No credit card trail connecting you to the service.
No User Profiling
They don't track what you talk about or build behavioral profiles. No analytics, no tracking pixels.
Who benefits most
Honestly, I think everyone benefits from keeping their AI conversations private. But some people really need it:
Writers
Unpublished work, drafts, and creative ideas stay off corporate servers.
Developers
Proprietary code and business logic don't end up in training data.
Lawyers
Client communications and case details remain confidential.
Researchers
Unpublished findings and sensitive data stay private.
Journalists
Sources and investigations stay protected.
Anyone
You don't need a special reason to want your conversations private.
Privacy comparison: NanoGPT vs direct providers
I put this table together because the differences are pretty stark once you line them up side by side.
| Feature | OpenAI (ChatGPT) | Anthropic (Claude) | NanoGPT |
|---|---|---|---|
| Conversation logging | Yes (30 days min) | Yes | No |
| Training on your data | Default on (opt-out available) | Possible | Never |
| Account required | Yes (email + phone) | Yes (email) | No |
| Crypto payments | No | No | Yes |
| Employee access to chats | Yes (safety reviews) | Yes (safety reviews) | No chats stored |