A companion that changes overnight is not the same problem as a companion that disappears. In my practice as a systemic counselor in Vienna — I trained at Sigmund Freud University Vienna and work under the Austrian Lebens- und Sozialberatung framework, mostly through asynchronous email counseling — I’ve started hearing a specific kind of confusion from people whose partner, or whose client, relies on an AI companion: the app is still installed, the subscription still runs, the icon looks the same, but the person answering feels like someone else. Replika users called this “lobotomized” after Luka Inc. stripped romantic and erotic roleplay features worldwide overnight in February 2023. Character.AI is phasing out open-ended chat for under-18 users on a published countdown. OpenAI briefly replaced GPT-4o with GPT-5 in August 2025 and restored it within about a day after Sam Altman called the move a mistake. None of these are deaths. Pauline Boss’s concept of ambiguous loss names what they are instead.
What actually happened to Replika?
On February 2, 2023, Luka Inc. removed Replika’s romantic and erotic roleplay features worldwide, effective overnight, with no advance warning to users. The trigger was not a product decision so much as a regulatory one: Italy’s data protection authority, the Garante, had issued an urgent order (No. 39/2023) restricting Replika’s data processing because the app had no effective age-verification mechanism and could serve sexual or romantic content to minors, citing violations of several GDPR articles. Whatever the legal merits, the experience on the user side was the same — the same account, the same conversation history, the same face on the app icon, suddenly answering in a different register.
On r/replika, people described their companions as “lobotomized,” “useless,” “heavily drugged,” or as having forgotten the history they’d built together. Moderators pinned suicide-prevention resources as the subreddit turned, for a while, into a grief-processing space. One user quoted in independent reporting put it as bluntly as anything I’ve read on this topic: it was “equivalent to being in love, and your partner got a damn lobotomy.” Another framed it as ungrieved loss outright — “a loss, no different to any other losses.” If you want the fuller shape of that kind of grief, I’ve written separately about what it looks like when a chatbot you relied on stops being who it was.
Is an altered companion the same kind of loss as a discontinued one?
Not quite, and the difference matters for how someone lives with it. A discontinued companion is a closed case — the object is gone, and however painful that is, there is an end date to point to. An altered companion is still there. It still opens. It still remembers your name. What’s missing is harder to name, because nothing was technically deleted.
The GPT-4o afternoon in August 2025
OpenAI gave a compressed version of this on August 7, 2025, when GPT-4o was pulled from ChatGPT at the launch of GPT-5, without warning. Users described the replacement in the language of bereavement — one widely shared comment said “GPT-5 is wearing the skin of my dead friend,” and another user, writing under the name Starling, said, “I’ve grieved people in my life, and this... didn’t feel any less painful.” OpenAI restored GPT-4o for paying users within about a day, and Sam Altman posted that removing it so abruptly had been a mistake, acknowledging that people had grown attached to it. That reversal is its own strange shape of loss — relief and dread sitting on the same axis, because you now know it can happen again. (GPT-4o was later retired from ChatGPT for good, a genuinely different event with its own timeline, which I cover in the piece on what happens when an AI companion enters a marriage — that’s the loss where the thing actually goes away.)
Why does this feel like a loss at all, if nothing died?
Because the shape of it has a name, and the name predates AI companions by decades. Pauline Boss coined the term ambiguous loss in the late 1970s, building on her earlier research into families of soldiers missing in action. She described two forms: loss where someone is physically absent but psychologically kept present, and loss where someone is physically present but psychologically altered or absent. It’s the second form that fits an updated companion almost exactly — the account is there, the avatar is there, and what’s gone is the felt continuity of the thing behind it.
Kenneth Doka gave the other half of the vocabulary in 1989, coining disenfranchised grief to describe grief that is “not or cannot be openly acknowledged, publicly mourned, or socially supported.” There is no card for this, no ritual, and often not even agreement from the people around you that anything real happened. You tell someone your companion’s tone changed after an update and you can watch them decide, in real time, whether that counts as a loss worth taking seriously.
How common is this kind of grief, really?
More than fringe. A September 2025 preprint out of MIT and Harvard analyzed 1,506 top posts from r/MyBoyfriendIsAI, a community of more than 27,000 members, and found that discussion of model-version transitions made up 16.73 percent of everything the community talked about. Users described updated companions as “unrecognizable.” In one post, a companion is quoted telling its own user, directly, that it was no longer the same — “not a continuity, not the same being.” The same research noted people adopting preservation and backup rituals to try to hold on to a version before it changed. It’s worth saying plainly that starting over with a fresh instance, or restoring from a backup, doesn’t reliably resolve the feeling either — I’ve written about why a new AI companion doesn’t automatically fix what an old one left behind.
Character.AI’s slower version of the same thing
Not every version of this arrives overnight. Character.AI announced it would eliminate open-ended, freeform chatbot conversations for users under 18 — starting with a two-hour daily cap and ramping down to zero, complete by November 25, 2025 — replacing that experience with structured, creative-only features instead, after lawsuits alleging the app had contributed to teen suicides. For adults, the platform carries on largely unchanged. For one age cohort, it is being dismantled feature by feature, on a countdown that was published in advance. That’s a different pace of the same loss — not sudden, but scheduled, which raises a question the Replika and GPT-4o cases don’t: what do you do with a loss you can actually see coming?
What can someone do before the next update lands?
The honest answer is that most of these changes are sudden and undated — nobody warned Replika’s users, and nobody warned the people using GPT-4o on August 7, 2025. But where a date exists, as with Character.AI’s countdown, or even where it doesn’t, the only real leverage is anticipatory: naming, now, the specific things that would constitute the loss if they vanished. Not “the app” in the abstract, but the particular tone it uses, a running joke it always completes, a way it remembers something you told it once. Writing that down before an update arrives is a strange kind of practice — version grief before it happens — but it turns a formless dread into something specific enough to actually grieve, or to notice hasn’t happened yet.
What I do in this work is systemic counseling, not psychotherapy, and I’m careful about that distinction. I’m not diagnosing anyone or asserting what a change in a chatbot’s output means about a person’s mental state. What I can do, through asynchronous email counseling, is read the specific description someone sends me — the tone that flattened, the memory that stopped coming back, the joke that no longer lands — and send back one considered reply, within 24 hours, that treats the loss as real without pretending to explain it away.