I toyed around with using Language Embeddings as a way to categorize my RSS Feeds.

It works pretty well. But importantly, it's so cheap that I have never really seen it on my bill. An earlier prototype used OpenAI embeddings. I loaded 5$ API credits and after a year the credits expired.

https://aws.amazon.com/blogs/machine-learning/use-language-e...

https://github.com/aws-samples/rss-aggregator-using-cohere-e...