Some excellent input here. AI is a great tool.
Copilot is Microsoft's, based on OpenAI, which makes ChatGPT. Many people are using Anthropic's Claude, although I have not tried it, yet. I would stay away from Grok.
As many have said, answers are based on whatever information is out there on line. If there is something that is not on line already, it won't be included in the answer. It can't do original research, but can be a great time saver for researching and analyzing that research. It can be a creative tool, too, although I have other tried that, either.