Responded to your PM.
At the moment, all templates except blog posts are powered by GPT-3. OpenAI has set a 400 character limit, so that's why blog posts had to be made a different way. Right now, blog posts are at 475 words max, but this might change in the future after more experimentation. Blog posts are early, and the logistics are still being figured out. A second GPT-3 powered blog post template is being considered, but it would be slower and require more intervention from the user. (due to OpenAI restrictions) That idea isn't 100% yet, but it is being looked into.
For GPT-3 content, you can put together articles using the Content Rewriter and Content Expander templates pretty quickly. Content Expander will take 3 bullet points and turn them into a paragraph. So you can take the section output from the Blog Outline template, subheadings from related articles, Google - People Also Ask questions, Quora topics, etc., to use as the bullet points to generate a paragraph. By doing this, you can put together an article pretty quickly compared to writing it from scratch, and it will all be generated by GPT-3.
New features are rolling out all the time—pretty much weekly. I posted in here about the UI update and Short Sales Email template a few days ago. I'll be posting in this thread anytime a new template/update is released.