I had a subscription for 3 months or so.
I haven't found ChatGPT to be all that useful. My primary use is in TTRPGs. Story hooks and very generic things sure. But if I ask for anything specific to the rules for one specific TTRPG, even giving it the text to reference, it still comes up with absolutely unreliable nonsense. A mashup of things from several different TTRPGs. Even when asked a direct question "what's the stat-block for a zombie in the PDF I just gave you?" And it responds with something completely made up.
I have both Proton and Kagi. Kagi offers access to most of the major LLMs. Proton has their own. They all work more less the same. ChatGPT is nothing special realy.