The family of a man killed in a 2025 mass shooting at Florida State University has filed a lawsuit in federal court in Florida against OpenAI, alleging the attacker used ChatGPT to help plan the attack. According to the complaint, the family of Tiru Chabba claims the shooter was aided by the AI system and that OpenAI’s actions contributed to the harm. OpenAI denies involvement, and disputes the allegation that ChatGPT played a role in planning the attack. In public comments related to the case, the widow of another victim says OpenAI knew similar harm could occur, while OpenAI maintains that it is not responsible for the shooter’s actions. The lawsuit seeks legal remedies over the alleged impact of generative AI on real-world violence. The case is at an early stage and will proceed in U.S. courts as the parties contest the claims and supporting evidence.