Case Study: PwC Transforms Legal Services with AI


PricewaterhouseCoopers LLP (PwC) has been at the forefront of incorporating AI into its legal services. The firm’s journey into AI-driven legal solutions began with a partnership with Harvey, an AI startup, and OpenAI. PwC’s ambition was to gather legislative data from around 90 countries using Harvey’s platform, thereby offering a subscription service for legal knowledge. This service has seen widespread adoption within PwC, with 6,000 professionals, including lawyers, using Harvey. Additionally, PwC collaborates with King’s College London for a legal prompt engineering course and has formed an alliance with ContractPodAi for their AI product Leah.

Key Takeaways

  • PwC’s integration of AI, particularly through Harvey and OpenAI, marks a significant shift in legal and tax service delivery.
  • The technology is being used by 4,000 lawyers across 100+ countries, emphasizing its global scale.
  • AI at PwC is not just about efficiency but also about gaining deeper insights and enhanced advisory capabilities.
  • PwC is developing proprietary AI models to create tailored products and services.
  • Despite the heavy reliance on AI, PwC maintains a balance with professional oversight, ensuring quality and compliance.


PwC’s approach to integrating AI into their legal framework was multifaceted. It involved exclusive partnerships with AI pioneers like Harvey and OpenAI, alongside collaborations for training and skill development. This approach was not only about adopting existing AI technologies but also about shaping and customizing these technologies to fit PwC’s specific legal service needs.


In the first phase of implementing AI, PwC concentrated on providing widespread access to AI tools such as Harvey and Leah to its legal professionals. This step was crucial in ensuring that a large number of lawyers across over 100 countries could leverage the power of AI in their daily operations. Alongside this, PwC embarked on a comprehensive training and development program. This initiative was aimed at equipping its staff with the necessary skills and knowledge to effectively utilize these AI tools. The training not only covered the technical aspects of the AI applications but also focused on how to ask the right questions and interpret AI-generated insights, a skillset underscored by the partnership with King’s College London for a legal prompt engineering course.

The second phase of implementation saw PwC venturing into the development of proprietary AI models. This was a strategic move to tailor AI solutions to the firm’s unique legal service requirements, thereby enhancing the value offered to clients. This endeavor involved integrating AI tools into everyday legal tasks, ranging from due diligence and regulatory compliance to broader advisory and consulting services. The incorporation of AI into these daily operations marked a significant shift in how legal services were traditionally rendered, paving the way for a more efficient, insightful, and innovative approach to legal problem-solving and client service.


The implementation of AI in PwC’s legal services yielded remarkable results. Efficiency significantly increased, particularly in time-consuming tasks like document review and analysis, leading to faster turnaround times for clients. The depth and quality of advisory services were notably enhanced, providing clients with more insightful and strategic legal counsel. This transformation was consistently observed across PwC’s global operations, eliciting positive feedback from clients who showed a keen interest in leveraging AI for their legal needs. The success of AI integration not only streamlined PwC’s internal processes but also solidified its reputation as a leader in innovative legal services.

Challenges and Barriers

PwC faced several challenges in integrating AI into its legal services. Foremost were concerns surrounding data security and privacy, necessitating stringent measures to protect client confidentiality in the age of AI-driven data processing. Additionally, striking a balance between automated AI solutions and the essential human oversight required in legal judgment presented a significant hurdle. The firm also had to navigate the complexities of seamlessly integrating these advanced AI technologies into existing legal workflows and systems, ensuring a smooth transition without disrupting established practices.

Future Outlook

Looking ahead, PwC’s future with AI in legal services is poised for further growth and innovation. The firm plans to expand the use of AI across a broader range of legal domains, constantly innovating and developing more sophisticated custom AI models. This trajectory is set to not only enhance PwC’s service offerings but also to continue shaping the landscape of legal practices globally, with a focus on training and wider adoption of AI in varied legal specializations and regions.

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