Which AI Tool is Best for Research, writing and answering questions?
It depends on the job. As a rule of thumb, Perplexity is strongest for research because it cites its sources, ChatGPT is strong for drafting text, and Gemini works well for questions and answers over long material. For anything involving work data, use the tool your organisation has approved.
More in Choosing an AI Tool
What do you get with paid ChatGPT, Claude or Gemini that the Free plan does not give you?
It depends on the chatbot, but mostly you get higher usage limits and extra features. Free plans hit a usage limit and then make you wait for it to reset, and Claude's free plan tends to run out fastest. Paid plans also give a longer context window, so one conversation can run much longer.
Which AI Chatbots have a Projects feature?
Most of the big ones do. ChatGPT, Claude, Gemini, Mistral, Copilot and Grok all let you create projects, which keep related chats, files and instructions together in one place. You create each project yourself in the tool's projects section, then add the files and instructions you want it to use.
Is there a limit on how much text I can paste into an AI Chatbot?
Yes, and it depends on the tool. Gemini accepts very long text and is close to unlimited for most everyday use, while Claude has a much stricter limit. If you run out of space, put the text into a Word document and upload it as a file instead of pasting it into the chat.