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These tools are designed for and marketed to lawyers to use. These are not generalist LLM products. Your "this is why lawyers exist" statement makes no sense in the context of these products.

One of the models studied markets itself with "AI-Assisted Research on Westlaw Precision is the first generative AI offering from Thomson Reuters and will help legal professionals find the answers they need faster and with high confidence."

Another says "Most attorneys know Practical Law as the trusted, up-to-date legal know-how platform that helps them get accurate answers across major practice areas. Its newest enhancement, Ask Practical Law AI is a generative AI search tool that dramatically improves the way you access the trusted expertise from Practical Law."

A third says "Transform your legal work with Lexis+ AI"