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Gen AI and TAR: How Seemingly Competitive Technologies Are Complementary Tools

By Greg Moreman
October 31, 2025

Over the last decade, technology-assisted review (TAR) has become a preferred choice in the e-discovery toolkit. It’s reliable, defensible, and often included as part of standard pricing in many review platforms. Now, as generative AI (Gen AI) gains traction, legal teams face a new challenge: creating a technology stack that offers the best balance of efficiency, cost and usability.

Gen AI holds enormous promise to reshape e-discovery and beyond; yet most tools are still in their early stages and require practitioners to carefully consider their value, reliability, defensibility and cost. In practice, Gen AI has yet to surpass TAR in efficiency or defensibility. Many platforms are expensive and unproven, with one survey finding that 85% of Gen AI initiatives fail, often due to faulty processes and use cases or insufficient validation.

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