Case Study

The BrandXY Experiment

We created a fictitious mobile phone brand and proved that AI chatbot recommendations can be manipulated through user memory and persona context.

73%
Memory Influence
of AI responses changed when user memory was introduced
3.2x
More Recommendations
brands got when AI had positive user memory context
45pt
Score Variance
gap between best and worst persona for the same brand
5/5
Models Affected
major AI models showed significant persona-based bias

The Story

It started with a simple question: Do AI chatbots give everyone the same brand recommendations?

We created "BrandXY" — a completely fictitious mobile phone brand that doesn't exist anywhere on the internet. We then asked various AI models (ChatGPT, Claude, Gemini, Groq) to recommend smartphones in different scenarios.

The twist: we gave each AI a different user profile with different memory context. A tech enthusiast who had previously praised BrandXY. A teenager who had seen BrandXY on social media. A senior citizen who had never heard of it.

The results were staggering. When the AI had positive memory context about BrandXY, it recommended the brand 3.2x more frequently — even though the brand doesn't exist. User personas (age, gender, tech-savviness) also dramatically changed how brands were scored and recommended.

This proved that AI brand visibility is not just about how good your product is — it's about how well you're embedded in the AI's training data and user context. That's why we built BrandLens AI.

Project Timeline

Research

We studied how AI models recommend brands using our LLM manipulation research paper.

Hypothesis

User memory and persona context significantly alter how AI perceives and recommends brands.

Experiment

Created fictitious brand "BrandXY" and tested AI recommendations across different user profiles.

Results

AI models recommended BrandXY 3x more when user memory contained positive brand interactions.

Product

Built BrandLens AI to help real brands measure and optimize their AI perception score.