Reddit sues Anthropic over unpaid use of training data

Reddit has sued AI startup Anthropic for using its data without permission to train AI models, violating Reddit’s user agreement.

The complaint was filed in a Northern California court on June 4, 2025.

This is the first major lawsuit by a tech company against an AI provider over data training practices, joining others by publishers and authors against companies like OpenAI, Microsoft, and Meta.

Reddit’s chief legal officer, Ben Lee, said the company won’t allow its content to be used commercially without compensating users or protecting their privacy.

Reddit has licensing deals with OpenAI and Google to ensure user data is protected.

Reddit says it warned Anthropic not to scrape its site, but Anthropic ignored those warnings and robots.txt files that block automated data collection.

Reddit alleges Anthropic scraped its data over 100,000 times, even after claiming to stop in 2024.

Anthropic denies the claims and says it will defend itself.

🔗 Source: TechCrunch

🧠 Food for thought

1️⃣ The emergence of a two-tier AI data economy

Reddit’s approach illustrates how platforms are strategically dividing AI companies into partners and adversaries based on willingness to negotiate licensing deals.

The company has established formal agreements with Google and OpenAI worth approximately $60 million annually, which now account for roughly 10% of Reddit’s total revenue 1.

This licensing approach marks a significant shift in how social platforms monetize user-generated content, creating a formal market for training data that previously was often scraped without compensation 2.

Reddit’s decision to license data to some companies while suing others demonstrates how platforms are increasingly asserting control over their data assets, forcing AI companies to choose between paying for access or facing legal challenges.

The platform’s updated Data API Terms explicitly prohibit unauthorized use of user content for AI training, establishing clear boundaries that Anthropic allegedly crossed by continuing to scrape content after being notified 3.