tbh, a lot of big players (Microsoft, Facebook, Google) host a lot of AI stuff on huggingface and quite likely have to pay for that.
Also they had a few successful funding rounds, last one led by Salesforce.
Also Amazon is invested in them, probably offering a lot to them for free or discounted.
I’ve used it, it’s pretty rough and unfinished, the current main branch doesn’t build without help and you’ll need ollama or openai keys.
The results however are impressive, even with a small model like phi3 mini through ollama. They got some good prompts behind it and the results name the sources + have some good followup questions.