Keyword research is an essential part of ensuring the people looking for the information or services you offer can find them. Learn how to do it.

OpenAI, Google, Perplexity, and xAi offer deep research modes that surf the web for you. I put them to the test with the same topic; here's how they fared and how to try it yourself.

Need an expert on a hot topic today? Perplexity promises its Perplexity Deep Research can deliver the information you need. Does it? Let's find out.

In research mode, the AI can consult a variety of sources, including the web, to research your request and provide a detailed response.