Matters

A product · in testing · September 2026

Mirrim: writes the way you write

A model trained on one person’s writing, so a draft comes back in a voice they would recognize as their own.

Chris Russo ยท September 2026

Mirrim is a small open model fine-tuned on one person’s writing. Give it an outline and an audience, and it writes the way that person would, in the register they would use.

Your voiceTrained on years of a person’s own email, messages, posts and dictation, not on a style guide.
The right registerA switch between professional and personal, so a client email and a note to a friend each sound right.
A last passIt works at the end of the writing, on substance someone already decided, not as an author from scratch.
Runs privatelyTrained and served on a private machine, not a cloud service.

Why we built it

Voice is cheap to learn and substance is not. We wanted the drafts we already write with AI to come back sounding like us.