AI Life Twin: a private AI that remembers your life
Ask questions about your own life and get warm, honest answers grounded in what you have actually written, with links back to the entries it used.
- Answers only from your own diary, never from anyone else's
- Cites the entries it used so you can tap straight to them
- Summarize my week, show my happiest memories, help with goals, plan a trip
- Says "I don't see that in your diary yet" instead of making things up
- Clearly labelled AI. Not a therapist, not a doctor, never pretends to be a person
- Turn AI memory off at any time in Settings
How it works
Every time you save an entry, Diary.com builds a private, encrypted index of it inside your account. When you ask your Life Twin something, it searches only your index, picks the most relevant moments, and writes an answer that cites them. Nothing is shared with other users, and your words are never used to train AI models.
Which AI models?
Free accounts use Claude Haiku 4.5. Paid plans use Claude Sonnet 5.5, and the Life and Family plans add a monthly allowance of deeper answers from Claude Opus 5.5. The model is chosen on our server from your plan.
Safety first
If you write about wanting to harm yourself, your Life Twin stops and shares the 988 Suicide & Crisis Lifeline (call or text 988 in the US and Canada) and encourages you to reach out to someone now.