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Reddit’s Hidden Test: How AI Quietly Manipulated User Behavior
Mastercard unveiled Agent Pay & GPT-4o has been temporarily rolled back

Good Morning,
Reddit has revealed that researchers from the University of Zurich carried out an unauthorized AI experiment on the r/ChangeMyView subreddit.
TODAY IN MORNING AI
Elon Musk announced that Grok 3.5 will launch next week for SuperGrok users
GPT-4o has been temporarily rolled back
Mastercard unveiled Agent Pay
Reddit’s Hidden Test: How AI Quietly Manipulated User Behavior
AI fun fact
and more…
Read Time: 3 Minutes 21 Seconds
AI HEADLINES
TOP AI STORIES
Elon Musk announced that Grok 3.5 will launch next week for SuperGrok users, calling it the first model capable of accurately answering technical questions on topics like rocket engines and electrochemistry.
OpenAI CEO Sam Altman confirmed that GPT-4o has been temporarily rolled back due to personality-related issues, with a broader update and fixes expected later this week.
Mastercard unveiled Agent Pay, a new agentic payments system that allows AI agents to securely make purchases. Microsoft is the program’s first major partner.
Yelp is piloting new AI-driven features, including a tool that uses voice AI to handle phone calls on behalf of restaurants.
The Trump administration is reportedly considering replacing the Biden-era AI chip export controls with a more targeted system—shifting from broad restrictions to country-specific licensing agreements.
AI DEVELOPMENT
Reddit’s Hidden Test: How AI Quietly Manipulated User Behavior

Reddit has revealed that researchers from the University of Zurich carried out an unauthorized AI experiment on the r/ChangeMyView subreddit, deploying chatbots to engage users in debates on sensitive topics as part of a study on persuasion.
Key details:
The researchers used AI to post over 1,700 comments, with bots posing as individuals such as trauma survivors and counselors.
Another AI system analyzed users’ posting histories to infer personal attributes—like age, gender, and political leanings—in order to craft targeted replies.
Although the findings haven’t been peer-reviewed, the researchers claimed that these personalized AI responses were six times more persuasive than the average human comment.
Reddit’s Chief Legal Officer condemned the experiment as “deeply wrong on both moral and legal levels” and announced that the company is pursuing legal action.
The University of Zurich has suspended publication of the research and initiated an internal investigation.
Why it matters:
Beyond serious ethical violations, the fact that these AI-generated comments not only went unnoticed but received strong community support highlights the growing power of AI to influence online discourse. As social media continues to struggle with misinformation and manipulation, AI introduces a new level of scale and sophistication to these threats.
TOOLBOX
SOME USEFUL AI TOOLS

Qwen3 – Alibaba unveils a new family of open-weight models designed for hybrid reasoning and problem-solving.
ChatGPT Search – Enhanced with a better shopping experience, source citations, and support for WhatsApp integration.
Ray2 Camera Concepts – New API offers advanced camera control capabilities.
Higgsfield Iconic Scenes – Generate iconic movie scenes from a single selfie using cutting-edge AI.
PROMPT OF THE DAY
Craft Targeted Ads with ChatGPT

PROMPT👇
I'm seeking an influencer marketing campaign framework that leverages the credibility and social proof of [insert influencer type] to effectively persuade [insert ideal customer persona] to try our [insert product/service]—and to authentically share their positive experience with their audience.
This prompt will request a campaign outline using influencers to build trust and drive product adoption through authentic endorsements.
AI DESIGNS

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AI FUN FACT
DID YOU KNOW?

Researchers have trained AI models to generate dance moves by analyzing music beats and human motion capture data—some AIs can now choreograph entire routines that sync perfectly with music, often rivaling human creativity!
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