The tool will use the technology’s latest version, GPT-4, which launched this week. It’s currently being tested with 300 advisors, and when released more broadly, will aid all of Morgan Stanley’s 16,000 advisors. The bank’s use of GPT-4 will be intended to assist human advisors, much like a research assistant would. But it’s not supposed to replace human advisors, who are still needed to interact with clients.