Woofun AI reports that a US federal judge has approved a $1.5 billion settlement to resolve the two-year class action lawsuit regarding Anthropic's use of copyrighted books. The court previously ruled that while training the Claude model constituted fair use, downloading and storing over 7 million pirated books violated copyright laws. Over 91% of affected authors and publishers have filed for compensation, though some rights holders have opted out to pursue separate litigation. This agreement marks the first major US AI training copyright case to complete the full cycle of trial, ruling, and settlement.