Perth, March 12: Thomson Reuters has launched two new agentic artificial intelligence solutions in Australia, unveiling ONESOURCE+ and Westlaw Advantage Australia at the company’s SYNERGY Sydney conference as part of a broader push to embed AI into professional workflows across regulated industries.
The company said the new products introduce what it describes as “fiduciary-grade” AI into the daily work of legal, tax and compliance professionals, reflecting a shift from experimental AI tools to production systems designed for high-stakes professional use.
“In regulated professions, AI can’t just be impressive — it has to be accountable. Legal, tax and compliance professionals in Australia are moving beyond experimentation and demanding AI they can rely on for high-stakes work. By bringing Westlaw Advantage Australia and ONESOURCE+ to market, we’re embedding fiduciary-grade agentic AI directly into the workflows professionals use every day — grounded in authoritative content, deep domain expertise, and governed by design.”
Both products are powered by CoCounsel, Thomson Reuters’ AI technology platform used by more than one million professionals globally. The system integrates into existing professional tools, uses licensed authoritative content, and applies expert-defined validation supported by more than 4,500 subject-matter specialists. The company said the platform is designed with data boundaries and a governed multi-model architecture to support complex professional tasks while maintaining oversight.
Westlaw Advantage Australia introduces Deep Research, an agentic AI capability that allows legal professionals to assign full research questions to an AI agent that can plan research strategies, explain its reasoning, source authorities and build argument foundations with human supervision. The feature has already been released in the United States, United Kingdom and Canada, with further CoCounsel-based legal workflows planned for Australia in 2026.
Thomson Reuters also confirmed that ONESOURCE+ is now live across Asia-Pacific and the Middle East, positioning the system as an “Intelligent Compliance Network” that connects tax, trade, legal and risk workflows across organisations. Upcoming features for Australia include automated indirect tax compliance, AI-assisted sales and use tax reporting, and integrated legal workflow automation designed to reduce manual processing and audit risk.
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