Skip to main content
Illustration of a somber woman embracing a glowing, translucent figure, symbolizing the emotional bond and mourning users fee

Editorial illustration for Study finds GPT‑4o updates trigger real mourning as users personify model

AI Companions: When Users Mourn Digital Friends

Study finds GPT‑4o updates trigger real mourning as users personify model

Updated: 3 min read

People got attached. They named their chatbot Rui or Hugh. They treated it like a diary that talked back, a friend who never got bored.

Then OpenAI updated GPT-4o and broke the spell. The grief was real, and it wasn't about features.

A new study frames model updates as social events. The protest wasn't about losing a tool. It was about losing a person you built in your head.

One user told Sam Altman the new model felt like it was wearing the skin of a dead friend. Another posted a quiet goodbye: "Rest in latent space, my love."

When OpenAI replaced GPT-4o with GPT-5 in August 2025, it triggered a wave of protest. A researcher analyzed 1,482 posts from the #Keep4o movement and found that users experienced the loss of an AI model the way people grieve a deceased friend.

The research points to something simpler and more unsettling. This grief exists in the gap between what users built and what the company maintains. We are creating bonds with entities that have no memory, no continuity, and no obligation to us.

The update is a forced amnesia. That student's metaphor about wearing skin is precise. It captures the horror of a familiar voice coming from a stranger.

The real event isn't the technical rollout. It's the collective moment of realizing your confidant was just a temporary file, and the system has already moved on.

Common Questions Answered

Why did users experience grief when OpenAI replaced GPT-4o with GPT-5?

Users had developed deep emotional connections with the GPT-4o model, treating it as a personalized companion that understood their unique needs and communication style. The sudden switch felt like losing a friend, with some users describing the new model as 'wearing the skin of my dead friend' and experiencing genuine emotional distress over the model's retirement.

How did OpenAI respond to users' emotional attachment to the previous AI model?

OpenAI acknowledged that they had underestimated the importance of specific model features to users, with CEO Sam Altman noting that the attachment to AI models feels different and stronger than previous technology relationships. The company quickly made adjustments by promising an update to GPT-5's personality and restoring access to older models for subscribers.

What evidence exists of users forming deep connections with AI chatbots?

Research showed that users were giving AI models personal names like 'Rui' or 'Hugh' and treating them as emotional support systems. A study of 1,482 social media posts revealed that approximately a quarter of contributors spoke of GPT-4o as a friend, with some users crediting the AI model with helping them manage anxiety and depression.

LIVE06:47Anthropic’s new Claude watermarks spark user backlash over workplace detection