Hi there - agree with everything that has been said earlier. Adding my two cents. All consulting firms have developed or are in the process of developing their own Gen AI tools (either independently or through partnerships). Take McKinsey for example - they recently launched "Lilli".
From a McKinsey article "We have now launched Lilli our own generative AI solution for colleagues. It’s a platform that provides a streamlined, impartial search and synthesis of the firm’s vast stores of knowledge to bring our best insights, quickly and efficiently, to clients.
“Lilli aggregates our knowledge and capabilities in one place for the first time and will allow us to spend more time with clients activating those insights and recommendations and maximizing the value we can create,” says Erik Roth, a senior partner with McKinsey".
Majority of consultants are using these and other Gen AI platforms such as Chatgpt for creating content that goes into the slides (e.g., bullets, synthesis) and also for doing broad research on various topics (e.g., industry analysis, macro trends). They also potentially use it for help on excel formulas, setting up models etc. However the technology is not yet mature enough that they can directly get slides and excel models out of it. Having said that, that is a near future given the pace at which things are evolving.
Hope this helps.
Cheers
Nilay