Aethera AI

Aethera AI has a free plan, with Plus at $12.5 a month and Pro at $20 a month for heavier use. Aethera AI is an AI workspace for writing, analysing and collaborating on documents, and it also works as a research and summarising tool.

You upload files, ask questions about them, and get answers in a chat that can search the web.

It can import a YouTube video or a website as source material, and you can speak your prompt instead of typing it.

The tiers differ mainly in volume and model quality.

Free gives you 3 document uploads and 125 questions a month, 5MB files, one image per question and basic models.

Plus raises that to 50 uploads, 750 questions and 50MB files, with two images per question and Plus models.

Pro allows 200 uploads, 1,500 questions and 250MB files, with Pro models.

The free tier is small, so anyone working through many documents will hit the upload cap quickly.

Every plan includes web search, the YouTube importer and the website importer.