At the recent conference of the International Legal Technology Association, the big legal AI vendors CoCounsel, Harvey and Legora had outsized presences, with ginormous booths in the exhibit hall, major-name performers at their parties, and advertising so ubiquitous it even popped up in people’s Uber apps. (See: Have We Reached ‘Peak Legal Tech?’ Sure Felt That Way At ILTACON this Week.)

So which of those is the preferred choice of law firms? Turns out, the answer is “None of the above,” at least according to the findings of the just released 2026 technology survey.

The survey spanned over 500 law firms — all ILTA members — from small boutiques to global giants, representing a dozen countries and 140,000 lawyers.

Of them, the vast majority, 94%, say they are using or exploring generative AI tools, up from 80% last year.

But when ILTA asked the firms which tool they are using or exploring, the leader by a wide margin was Microsoft 365 Copilot, used by 76% of firms.

Second place was effectively a three-way tie between two of the leading legal AI products, Thomson Reuters CoCounsel (44%) and Harvey (43%), and one non-legal general AI product, Anthropic’s Claude (44%).

Legora came in much lower in the results, at 16%, behind products such as Lexis+AI (26%), ChatGPT Enterprise (22%), iManage (22%) and Litera One (17%).…

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