Lighthouse Launches AI Search to Transform Litigation

Lighthouse, a leader in technology-enabled eDiscovery, compliance, and information governance services, has announced the availability of Lighthouse AI Search. This AI-first search tool enables litigation teams to more effectively identify evidence, understand narratives, and develop a case strategy.

Designed specifically for the scale and complexity of discovery, Lighthouse AI Search allows attorneys to surface critical information, understand case narratives, and build strategies earlier and more confidently. The product’s AI-first approach enables users to interrogate their data without requiring specialised search syntax or AI expertise—and without first filtering it using search terms.

Built on proprietary AI based on Large Language Models (LLMs), Lighthouse AI Search leverages the best of both predictive and generative AI. It achieves unparalleled cost efficiency, accuracy, and the ability to scale to hundreds of millions of documents—empowering attorneys to uncover important insights and accelerate decision-making.

“This AI-first search is a complete game changer for litigation since it enables anyone, regardless of their familiarity with traditional search syntax, to query an entire document set and get not just an answer to their question but also the specific documents and passages within those documents that underpin how the answer was reached,” says Dan Brassil, Executive Director, Search at Lighthouse. “It’s transformative because it works for anyone, anytime, anywhere.”

Lighthouse AI Search adds value to every stage of litigation, from early case assessment (ECA) to the courtroom. Examples of use cases include:

• ECA: Quickly surface key facts before investing in a deep review
• Case Strategy Development: Discover insights that may be buried in the dataset
• Inbound Production Analysis: Easily assess opposing productions without exhaustive manual review
• Deposition and Trial Preparation: Rapidly access critical information, even mid-hearing

“Having the ability for any attorney to interrogate all the data related to a matter is tremendous,” says Christian J. (CJ) Mahoney, Counsel and Global Head of eDiscovery and Litigation Technology at Cleary Gottlieb. “Lighthouse AI Search empowers our attorneys to easily and quickly find key information at any point during a matter, meaning they can develop case strategy sooner, validate or investigate new information easily, and make confident, data-informed decisions.”

While traditional searches require identifying the precise keywords upfront, Lighthouse AI Search “reads” and analyses the entire document population, not just the documents that may be returned as a result of a given search, enabling users to uncover critical information they may not even know exists. Lighthouse AI Search is grounded solely in the documents for each specific matter. It does not rely on external inputs to build the model, ensuring that answers are accurate to the information contained in the document set and limiting the risk of hallucination (AI-generated inaccuracies not grounded in the data set).

Users receive conclusive answers to their queries in the form of an AI-summarised answer, not just a list of possible results, along with a selection of documents and highlighted passages to allow them to easily verify and delve deeper into the details of each answer. Lighthouse AI Search works out of the box without requiring specialised AI knowledge and is designed for use by litigators who are generally not experts in AI or prompt engineering.

“AI that lawyers themselves can use offers tremendous value to the legal market,” says Ron Markezich, CEO of Lighthouse. “Since our first AI solution in 2019, we’ve focused on service-delivered solutions that are pragmatic and high-impact for our clients. With Lighthouse AI Search, we’re expanding that focus by placing the power of AI directly into the hands of attorneys, enhancing outcomes and driving real business value.”

About Lighthouse
Lighthouse is a global leader in eDiscovery and information governance solutions, helping compliance and legal teams manage the increasingly complex landscape of enterprise data.