A new tool using International Business Machines Corp.’s Watson, notorious for defeating its human competitors on “Jeopardy” in 2011, is hard at work for in-house legal departments with the goal of significantly reducing outside counsel spend.

So far, use of “Outside Counsel Insights,” or OCI, has been limited to legal departments in the financial services industry, according to Brian Kuhn, co-founder and leader of IBM Watson Legal. But with the potential to save as much as 30 percent on annual outside counsel spend, it’s no surprise that the tool has piqued the interest of some of the largest companies in that field.