I recently signed up for Perplexity.AI - its basically a meta front-end for a few different models (ChatGPT, Sonar, Claude...)

However the secret sauce of perplexity is how you can organize you topics. So for example lets suppose you have specific questions about programming NodeJS on a BeagleBoard. You create a "Collection" and give it a prompt such as "You are a technical assistant and you will assist me in developing code for the BeagleBoard SBC running NodeJS programs. Please also refer to these documents where appropriate...." (then you upload any number pdf file, technical reference sheets, etc)

Each "Collection" is kinda like a separate post of SN or whatever...meaning that you see all your collections when you login and can jump into the appropriate one.

Then every question you ask in that "Collection" will be specifically geared towards that topic -- using those additionally provided reference material and instructions you originally provided. Additionally as the length of that topic grows into dozens or hundreds of queries, the AI model gets further and further context of what you are trying to achieve and can refer back to previous queries.

Its quite neat and pretty helpful. I'm not sure if I will stick with it or not, but at $20 per month its quite reasonable. Kinda like having a research assistant to help you....