Reddit is suing the AI search developer Perplexity and the companies from which it buys AI training data, alleging the data firms are illegally scraping its content, violating its copyright protections.

The lawsuit was filed on Wednesday in the US District Court for the Southern District of New York. In addition to Perplexity, three data firms are named as defendants: Oxylabs UAB, AWMProxy and SerpApi.

In the filing, Reddit said the data firms circumvented Reddit and Google's technological barriers by accessing nearly three billion search engine result pages (SERPs) in a two-week period in July using techniques to mask their identities and locations. Reddit called them "would-be bank robbers, who, knowing they cannot get into the bank vault, break into the armored truck carrying the c

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