● Covered by 1 source · 1 reportLow impact1 negative
Mumsnet denies and then confirms internal AI prompt leaked to users
Key points
- An AI prompt appeared on a Mumsnet message board.
- Users expressed concern and skepticism regarding AI use.
- Mumsnet initially denied the prompt's origin.
- Mumsnet founder confirmed the prompt came from their system.
AI Prompt Appears on Mumsnet
A detailed AI prompt, titled "AIBU Response Schema v.1.0," appeared on a Mumsnet message board in response to a user's request for advice. The prompt instructed an AI to generate an "interpersonal reasonableness" post, including a forum-style ruling and actionable advice, and defined common Mumsnet abbreviations.
User Reaction and Speculation
Mumsnet users reacted negatively to the prompt's appearance, calling it "creepy" and "disappointing." This fueled speculation that Mumsnet was using AI to generate content, with some users expressing a desire to leave the platform.
Mumsnet's 2025 annual report stated its intention to embed AI tools to improve productivity and user experience, despite a 19% drop in monthly unique users and a decrease in posts.
Mumsnet's Shifting Explanations
Mumsnet initially denied using AI to write threads, stating the prompt came from a tool for suggesting thread titles that uses an OpenAI model. Users were unconvinced, noting that copying the prompt into an AI generated a full post.
Mumsnet then suggested the prompt transferred from the user's computer. This explanation was also rejected by users, who speculated an internal system leak. Ultimately, Mumsnet founder Justine Roberts confirmed the prompt originated from their system.
Industry Context
Recent research published in Nature indicates that AI assistance in social media can lead to "semantic garbage" and is perceived by users as less informative, "robotic," and "generic."
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
Mumsnet users discovered an AI prompt on a message board, leading to speculation about the platform's use of AI for content generation. Initially, Mumsnet denied using AI for threads and suggested the prompt originated externally, but later confirmed it came from their internal system.