Privacy & Your Data

Phi is built around a local-first architecture. The idea is simple: Phi can know you well without your personal context becoming a cloud-owned asset.

Where your data lives

What Phi remembers about you — your Memory — is stored locally on your device. It is built there as you browse and is meant to stay with you, under your control.

What Phi does not collect

Phi will never collect:

• your memory data,
• your AI interactions,
• your browsing context.

Phi does not sell your browsing-derived data, and it does not use your memory, browsing context, or AI interactions to train models.

A nuance worth knowing: large language models from providers such as Anthropic, OpenAI, or Google may be used to process tasks. But your personal memory stays local, is not treated as a cloud-owned asset, and is never used for training.

You can also narrow what leaves your Mac at all. With Private AI, run through Phi Sentinel, some of those tasks run entirely on your own machine, so they need no cloud model in the first place.

Staying in control

Memory is not a black box. You can view, manage, and delete what Phi remembers, directly inside Phi.

Turning AI off

If you want a plain browser, you can disable all AI features in Settings → Phi AI. Turning AI off closes your AI conversations and disconnects any External Data Connectors.

Your Memory is not deleted by this switch — it stays on your device. If you want to erase what Phi remembers as well, use the clear option on the Memory page; that deletion is permanent and cannot be undone.

Open source

Phi's core is open source, so its behavior can be inspected rather than taken purely on trust.