Hiro: Private AI Assistant

Access Frontier Intelligence Without Giving Up Your Privacy

We developed Hiro to give everyone access to the smartest AI without sacrificing their privacy.

End-to-end encryption

Every chat with Hiro is end-to-end encrypted. Only you hold the keys to your data, so neither we nor anyone else can access your chats.

Trusted Execution Environment (TEE)

The models run in secure hardware enclaves with remote attestation. The code on your device verifies that the deployed backend code matches exactly what is expected before you start chatting. That way, you can be certain that the code running on our servers matches what is expected.

Open-source backend

We are committed to verifiable security. Our backend code and the models we use are open source and transparent.

Frontier Intelligence

Hiro is powered by the smartest AI models and includes everything you need—chat, web search, and tools—while preserving your privacy.

How Hiro Compares To Alternatives

Comparison criteria	HiroActually Private	LumoPseudo Private	ClaudeNot Private
Open Source Code	Yes	No	No
Open Weight Models	Yes	No	No
Confidential Hardware	Yes	No	No
Remote Attestation	Yes	No	No
Zero Trust Architecture	Yes	No	No
No Training On User Data	Yes	Yes	No