Apodex

Apodex positions itself as a "heavy-duty solver" that deals with difficult problems that do not have ready-made answers and require step-by-step verification to advance, rather than daily questions and answers.

The difference between it and ordinary in-depth research tools is that the process can be checked. Each step of reasoning leaves traces, and the conclusion is accompanied by cited sources. Any report can be branched off from a certain step in the middle to continue pursuing it. It also supports full-text retrieval across conversations. For scenarios where you have to show your conclusion to others and need to be responsible for each number, this set of designs is much more useful than a beautiful answer that you don’t know where it comes from.

The homepage of the official website gives several example questions, which are focused on macroeconomics, medical evidence, and machine learning research. From these examples, we can see that its target users are researchers, analysts, and people who need to do due diligence.

You need to log in to use, and queries after logging in will be saved for easy review. The free quota is limited, in-depth research tasks themselves consume a lot of money, and long-term use requires payment. It is not suitable for chatting or quickly looking up information. For those types of needs, it is more cost-effective to use a general assistant.