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$ 1 K
Annual savings in billable hours
1 %
Reduction in review time
Generative AI

LegalTech Solutions Automated Contract Review Using Generative AI

Industry

Legal Services

Size

50-200 Employees

Location

London, UK

Background

LegalTech Solutions is a mid-sized law firm specializing in corporate real estate. Their associates spent thousands of hours annually manually reviewing lease agreements and vendor contracts. This work was repetitive, prone to human error due to fatigue, and prevented junior lawyers from focusing on higher-value litigation strategies. They possessed a massive archive of historical contracts but had no way to leverage that data effectively.

The challenges

The firm was facing burnout among junior associates and client complaints regarding the turnaround time for simple contract reviews. The Managing Partner wanted to implement AI but was concerned about data privacy and “hallucinations” common in public AI models. They needed a secure, private system that could read a PDF contract and instantly answer questions like “Is there a termination clause?” or “What are the liability limits?” citing specific page numbers.

We were skeptical about AI in law, but this system acts like a senior partner looking over every document. It highlights risks we might have missed and does it in seconds rather than hours.

James Sterling

Managing Partner

The Solution

We developed a secure, internal RAG (Retrieval-Augmented Generation) tool using Python, LangChain, and OpenAI’s API.

Implemented Pinecone to index and store thousands of historical legal documents, making them searchable by semantic meaning rather than just keywords.
Built a backend using FastAPI that retrieves relevant clauses from the vector DB and feeds them to GPT-4 to generate accurate summaries and risk assessments.
Engineered the prompt to strictly require citations, ensuring every claim made by the AI linked back to the specific paragraph in the uploaded PDF

The Result

The firm deployed the tool to 20 associates for beta testing and immediately saw a transformation in their workflow.

First-pass contract review time dropped from 4 hours to 30 minutes.
The architecture ensured strict data privacy compliance, satisfying the firm's compliance officers.
New hires could instantly query the firm’s entire history of "winning arguments" without pestering senior partners.

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