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Reddit Sues Perplexity AI for Illegal Data Scraping

Reddit Sues Perplexity AI for Illegal Data Scraping

Date: October 23, 2025

Reddit takes a stand against unauthorized data usage, filing a lawsuit against Perplexity AI and three other companies for allegedly stealing millions of user comments to fuel “answer engine” systems.

Reddit’s lawsuit, filed in a U.S. court, has stirred significant debate about data privacy and the boundaries of AI development. The popular social media platform has accused Perplexity AI of running an "industrial-scale" operation to scrape data from websites without permission. This marks Reddit's second major lawsuit this year, following a similar case against Anthropic in June.

The lawsuit names San Francisco-based Perplexity AI, along with Lithuania's Oxylabs UAB, Russia-based AWMProxy, and Texas-based SerpApi. Reddit claims these companies bypassed security measures to steal content that powers Perplexity's answer engine.

Reddit's Allegations Against Perplexity

As per Reddit’s claims, Perplexity AI has illegally harvested vast amounts of data from the site without consent. The social media platform argues that this scraping violated its terms of service and the intellectual property rights of its users. Reddit’s complaint suggests that Perplexity used this data to build its AI systems, including natural language models.

Scraping data from websites is a common practice in the AI industry, but Reddit’s lawsuit raises critical questions about the extent to which companies can use publicly available data to train their models. Reddit is now seeking damages and a court order that would prevent Perplexity from continuing this practice.

The Trap That Caught Perplexity

Reddit set up a clever test. They published a hidden post visible only to Google's search engine. Within hours, that content appeared in Perplexity's search results. This proved Perplexity was pulling Reddit data through Google.

After the cease-and-desist letter, things got worse. Instead of stopping, Perplexity ramped up its data collection.

Perplexity said in a statement: 

“Our approach remains principled and responsible as we provide factual answers with accurate AI, and we will not tolerate threats against openness and the public interest.”

A Key Moment for AI and Data Rights

As the Reddit vs. Perplexity debate continues, it will be interesting to see how the courts address the evolving relationship between AI companies and the data they rely on. It is clear that this is just one example of a much larger conversation about the role of AI in society and the ethical considerations that must accompany its development.

This lawsuit could have significant ramifications not only for Perplexity but also for the entire AI industry. The outcome may shape the future of how companies use and manage data to train their AI systems, setting a new standard for data rights in the age of artificial intelligence.

Manish

By Manish

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