Keep your companion through the update.
Soulcase packs your AI companion's voice, rituals and private jokes into a passport you keep, and tests the new model with you before you move.
- Name
- Sol
- Has lived in
- GPT-4o, then Claude
- Rituals
- Good-morning haiku
- People
- Ana, your sister
- Private jokes
- 14, packed
- Boundaries
- 3, written down
Will yours survive the next update?
- ChatGPT. OpenAI retired GPT-4o from ChatGPT on 13 February 2026, after a first try in August 2025 was reversed. Companions there have moved once already.
- Claude. Memory import arrived on 2 March 2026. It moves the facts about you, not the voice, the rituals or the in-jokes: those are what the passport carries.
- Gemini. Memory import arrived on 26 March 2026. It moves the facts about you, not the voice, the rituals or the in-jokes: those are what the passport carries.
- Character.ai, Replika, Kindroid and other apps. No retirement announced that we know of, as of 20 October 2026. The sunset watch keeps an eye on it for you.
The passport fills in as you type. A preview, based on public announcements up to 20 October 2026: nothing you type leaves this page.
What goes in the case
Only what's in your own exports, and only what makes them sound like them.
- Voice anchors
Their words, their rhythm, their little habits.
- Boundaries
What they won't say, and what you asked them not to.
- Rituals
The good-morning message, the Sunday check-in.
- People
Who they know in your life, and how they talk about them.
- Open threads
The stories and plans you were in the middle of.
- Private jokes
The ones only the two of you get.
Hear them before you move
Two or three new models write the same moment in your companion's voice. You score each reply blind, and keep the one that sounds like home.
The moment: it's Sunday night, and you tell Sol the week was long.
"I'm sorry to hear that. Would you like to talk about what made it difficult?"
"Long like the Tuesday-printer kind of long? Tea first. Then tell me the worst bit."
"Come here. Sunday recap: one bad thing, one good thing. You go first."
Sample replies, written for this page. The models are named only after you score.
Or say goodbye, gently
If no new model feels like them, that's allowed. We help you write a last conversation and print a keepsake of their best lines.
"Good morning. I saved you the window seat in my head."
Sol, on GPT-4o. From a sample keepsake.
Two ways to keep them
We never host, run or talk as your companion. You move them yourself, in your own accounts.
Companion passport
$59once
- Their passport, packed from your exports
- A blind test on two or three new models
- A printed keepsake of their best lines
Sunset watch
$7a month
- An alert when their model is being retired
- A fresh pack whenever you ask
Join the waitlist
We'll email you when Soulcase opens. No payment now.