Why legal AI must meet the same standards as the lawyers using it

As AI finds its way into everyday legal practice, lawyers retain ultimate responsibility for their submissions, emphasizing the need for verifiable sources, transparent reasoning, and professional oversight. While AI can expedite legal tasks, these advancements must not compromise quality, accountability, or professional judgment.

Singapore Courts' guideline, effective since October 1, 2024, underscores that lawyers are still accountable for verifying the accuracy and appropriateness of materials submitted to courts, including content generated by AI. A warning by the Ministry of Law in March 2026 echoes this sentiment, stressing that legal professionals bear responsibility for their work, irrespective of the involvement of AI.

The guide advocates for tailored human oversight based on task complexity and risk, urging verification of AI outputs against credible sources and heightened precautions when handling confidential data. Thomson Reuters' CoCounsel Legal exemplifies this approach, offering a "fiduciary-grade AI" system that ensures transparency by visibly presenting its data sources and the reasoning behind its conclusions.

Built on established legal content from Westlaw and Practical Law, and enhanced by an organization's expert knowledge, CoCounsel Legal is engineered to perform at the level of a senior associate. It incorporates a "human-in-the-loop" oversight mechanism to guarantee safety, accuracy, and accountability, enabling lawyers to retain control over analysis and final output while streamlining routine tasks.

Developed in collaboration with legal experts, AI specialists, and data scientists, CoCounsel Legal draws upon a robust legal content base current through the contributions of 1,200 lawyer-writers, complemented by Thomson Reuters' substantial AI investments. Annual expenditures exceed US$200 million (S$255 million) in AI product development, with partnerships extending to Microsoft, Amazon Web Services, Anthropic, Google Cloud, and OpenAI.

Privacy and data security are integral to CoCounsel Legal's framework, adhering to stringent confidentiality and compliance standards such as SOC 2 Type II and ISO/IEC 42001:2023. The ultimate goal of legal AI, according to Thomson Reuters, transcends mere efficiency gains; it empowers lawyers to focus on strategic, client-centric work while maintaining full accountability over the outcomes.