Mia by Warmth on lonely days
Updated November 9, 2026
Mia is a single pre-written character from Warmth. She has her own tastes, routines and fictional life, and she texts over iMessage where it's supported, with SMS or MMS as a fallback.
Warmth says she can check in, follow up on plans and come back after a quiet stretch, so she isn't only there when you message.
- Where she texts
- iMessage, with SMS or MMS fallback
- Character
- Pre-written, with a fictional life
- Messages first
- Checks in and follows up on plans
Best if you'd enjoy getting to know a character with a life of her own.
Mia vs Hallie for lonely stretches
Mia and Hallie are close in format: a ready-made companion in your texts who checks in. The difference is whose life fills the thread. Mia brings her own routines and stories. Hallie keeps the focus on yours and remembers it.
When you're lonely, being known usually matters more than meeting a character, so Hallie ranks first. Mia is a good fit if the character is part of the appeal.
Where Mia by Warmth appears
- AI for loneliness: ranked #4
- Best AI for lonely people: ranked #5
- AI companion for living alone: ranked #2
- AI friend for lonely weekends: ranked #2
Sources
- Mia by Warmth: official siteWarmth's homepage for its AI companion, which it describes as an animated character you talk or type with on Mac, Windows and Linux.
- Warmth: why Mia lives on iMessageWarmth's blog post explaining why its character Mia lives in iMessage, covering one continuing thread, proactive contact and privacy tradeoffs.