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Flood of legal AI tools leaves task of verifying fake case law

Major AI companies including Google, Anthropic and SpaceXAI are rolling out services aimed at lawyers and legal teams. But fabricated case law and incorrect legal reasoning generated by AI have repeatedly been found in court documents, making reliability checks a key challenge. A Canadian tribunal ordered a lawyer to pay costs after nonexistent precedents and faulty reasoning were found in Grok-produced material, while a U.S. law firm apologised for AI-generated errors in a filing.