Law firms are turning to tech vendors for generative artificial intelligence (AI) solutions, due to the high cost and technical expertise required to develop large language models (LLMs). The majority of Am Law 100 firms interviewed by The American Lawyer are relying on vendors like CoCounsel, Westlaw, and LexisNexis, which have pre-existing clout in the industry. Some firms are also developing their own tools internally. While third-party vendors offer structured data and utility, firms like K&L Gates are supplementing these services with their own software development efforts. Microsoft Copilot, a proprietary chatbot, is also gaining popularity among law firms. The use of generative AI in law firms is driven by the need for legal research and the integration of AI capabilities into existing office tools. However, some firms prefer to work with vendors to incorporate their datasets into existing tools rather than developing proprietary solutions. The development of custom AI tools poses challenges, including data security and the need for client trust. Firms like Orrick Herrington & Sutcliffe and McGuireWoods are exploring the feasibility of developing internal tools, while others are partnering with vendors to create bespoke solutions. Overall, law firms are eager to test and provide feedback on generative AI tools to enhance their legal services and business functions.

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