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Answers you act on, decisions you can defend
CoCounsel is the only Fiduciary-Grade AI™ built on 175 years of expert-curated content, grounded in authoritative sources that your legal and tax teams can stake their reputation on
Most AI gives you an answer — CoCounsel gives you a defensible one
No matter your function, CoCounsel has you covered
Built on millions of regulatory updates curated by domain experts, not scraped from the internet. CoCounsel grounds every answer in authoritative content, shows its reasoning, and keeps your data completely private. That's not a feature difference. That's a different category of AI.
The same Fiduciary-Grade AI, wherever you need to be right
For corporate legal teams
CoCounsel Legal
CoCounsel Legal reasons and grounds every answer in Westlaw and Practical Law legal content, and your organisation's own knowledge, never the open web. It's built for in-house teams that need to move at the speed of business, across contract review, drafting, research, and more. Every output is cited, reasoned, and defensible.
Learn more about CoCounsel Legal
For tax, trade & finance teams
ONESOURCE powered by CoCounsel
ONESOURCE automates indirect tax, direct tax, statutory reporting, e-invoicing, global trade management, and denied-party screening across more than 200 countries and jurisdictions. It's powered by CoCounsel's Fiduciary-Grade AI and integrated seamlessly with the enterprise resource planning (ERP) systems your teams already run on.
Learn more about ONESOURCE powered by CoCounsel
Trusted by more than 115,000 corporations worldwide
“For me personally, it’s (ONESOURCE) shifted a process that used to be reactive to being proactive. The process just works in the background.”
Kevin Escott
Senior Director – Program Manager, JLL Technology
“This is going to be the way lawyers work in the future.”
Hal Snedden
VP Global Privacy and Cybersecurity Counsel, Brink’s – A global provider of secure logistics and security solutions
Show us your challenge — we'll show you the library
Tell us where the complexity lives in your legal or tax teams, and a specialist will tailor a walkthrough to your exact needs.