Thomson Reuters wants to be the AI platform for lawyers. Can it pass the ChatGPT test?

North America
Source: Business InsiderPublished: 11/05/2025, 10:52:20 EST
Thomson Reuters
Legal Tech
Generative AI
OpenAI
Market Competition
Thomson Reuters CEO Steve Hasker. Patrick MacLeod/Penske Media via Getty Images

News Summary

Thomson Reuters (TR) is leveraging its vast legal data trove with generative AI, through products like Westlaw Advantage and CoCounsel, to automate legal work. Initial investor enthusiasm has waned due to the emergence of new rivals and questions about whether TR's AI offerings, such as CoCounsel, can truly differentiate from existing large AI models like ChatGPT. Following its Q3 earnings report, Wall Street's tepid response led to a >6% drop in TR shares, bringing the total decline to over 30% since mid-July. Although the legal unit reported 9% organic revenue growth to $700 million and CoCounsel products saw double-digit growth, CEO Steve Hasker emphasizes TR's proprietary legal library and human-curated editorial content as an irreplaceable moat, crucial for accuracy in high-stakes legal work. New challengers are actively entering the market, including RELX's LexisNexis strategic alliance with AI legal tech startup Harvey, and legal operations platform Clio's $1 billion acquisition of legal data specialist vLex. Hasker dismisses startup valuations and claims superior CoCounsel adoption, but the looming presence of OpenAI, both as an underlying model provider and a potential direct competitor, continues to fuel industry tension.

Background

The legal technology sector is undergoing significant transformation driven by generative artificial intelligence. Traditional legal information giants, such as Thomson Reuters and LexisNexis, are striving to integrate their vast proprietary legal databases with cutting-edge AI to maintain market leadership and fend off new entrants. The rise of generative AI has opened doors for startups, attracting substantial venture funding. These new players are leveraging more agile AI models and innovative approaches to challenge the established landscape. Simultaneously, general-purpose AI model developers like OpenAI pose a potential threat, not only by providing foundational technology (many legal AI products use GPT models) but also by potentially entering vertical markets directly, intensifying industry competition. Legal work's unique demands for extreme accuracy, security, and timeliness necessitate AI solutions that go beyond general capabilities, offering validated, domain-specific expertise. Companies possessing high-quality proprietary data and human editorial processes are attempting to build competitive moats based on these advantages.

In-Depth AI Insights

Is Thomson Reuters' 'moat' deep enough in the AI era to withstand the onslaught of general-purpose AI and the influx of new competitors? Thomson Reuters' CEO emphasizes its 'one-two punch' of proprietary legal data and human-edited content as an irreplicable moat, especially given the legal industry's extreme reliance on accuracy. However, this depth and specialization might also imply a slower development pace, making it challenging to rapidly adapt to fast-iterating general AI technologies. Emerging competitors like the Harvey-LexisNexis alliance and OpenAI's potential vertical integration could achieve 'good enough' or even superior user experiences in specific domains by combining flexible or powerful AI models with curated data. The core challenge is finding the balance between the incremental value of proprietary data and the iteration speed of AI models as general-purpose AI becomes increasingly capable. Is the market's 'tepid' response to Thomson Reuters' AI strategy an undervaluation of its long-term potential or an accurate reflection of inherent challenges in its AI transformation? The market's reaction, as seen in the stock price decline, likely reflects investors' broader concerns about how traditional giants will navigate AI-driven disruption to their existing business models and whether they can effectively translate AI capabilities into new, profitable growth avenues. While CoCounsel shows double-digit growth, AI investments are costly, and market competition is fierce. Investors may be waiting for clearer evidence that Thomson Reuters' AI products can generate a significant and sustainable competitive advantage and profitability. Current stock performance might suggest the market perceives slower-than-expected progress or risks of erosion to its 'moat' under AI's impact. How might OpenAI's potential entry into the legal tech space reshape the competitive landscape? Is this a partnership opportunity or an existential threat for Thomson Reuters? OpenAI, as a leader in general large language models, would be highly disruptive if it directly entered the legal tech space (e.g., by launching vertical applications). On one hand, this could pose an enormous threat to all existing legal AI providers, including Thomson Reuters, given OpenAI's top-tier AI technology and vast user base. On the other hand, if OpenAI continues primarily as an underlying model provider, companies like Thomson Reuters may still rely on its technology but will face the challenge of deeply integrating general models with their proprietary data to create unique value. Given CoCounsel already uses OpenAI's GPT models, this relationship is both a foundational partnership and a potential strategic vulnerability. OpenAI's investment in Harvey further blurs its role, making it both a partner and an investor in a competitor.