Lethe
user consented
Last checked:
What is Lethe?
Lethe is a personal AI identity management platform that maintains a unified, verified profile of you (your decisions, goals, context, preferences) that multiple AI tools can access with your permission. Import data from ChatGPT, Gmail, documents, and other sources; Lethe derives understanding with source citations; then Claude, Cursor, and any MCP-compatible tool opens already knowing your context instead of starting from scratch.
Lethe pricing
Pricing model: Freemium
Free beta, no credit card required
Lethe pros
- One portable identity across all AI tools—eliminates repeatedly rebuilding yourself
- Evidence-based with source citations—every claim about you includes the exact quote backing it
- Full privacy control: on-device encrypted vault, granular permissions per AI, access logs, instant revocation
- No lock-in: export or delete all data in two clicks, no credit card required during beta
Lethe cons
- Currently in beta; key roadmap features (Portable Lethe ID, permission profiles, agent delegation, teams) are not yet shipped
- Effectiveness depends on active user participation in importing data and connecting AI tools
- Adoption constrained by which AI tools support MCP protocol or Lethe integration
Frequently asked questions about Lethe
How does Lethe connect to AI tools?
Any MCP client (Claude, Cursor) or AI service can connect to Lethe. It reads your unified profile with your permission, starting already informed about your projects, decisions, and preferences instead of from a blank page.
What data can I import?
ChatGPT, DeepSeek, Grok exports; documents and photos; Gmail and Calendar read-only connections. Lethe derives understanding—goals, decisions, recurring problems—with source quotes for each claim.
Is my data actually private?
Sensitive data goes in an encrypted vault that runs on your local machine and is opened only by a passphrase Lethe never stores. Connected AIs cannot access the vault. Names are replaced with pseudonyms before storage.
Can I take my data if I leave?
Yes. Export your entire derived understanding or delete everything in two clicks. Lethe stores insights, not transcripts, and has no lock-in.