The bot just makes use of:

• SMMRY - I'm evaluating this and might eventually switch over to some ml library
• LemmyBot

As posts come in on a news community (via LemmyBot), I grab the url and pass it to smmry, and reply. And that's it.

Update June 22, 2023: I'll probably stop using SMMRY as it's pretty buggy and not usable ~20% of the time. I'm thinking about using a headless browser (like Selenium), grabbing the text, and using GPT to analyze and summarize the text. I need to try this out and guesstimate the pricing for it.