The multi-agent "swarm" thing (that seems to be the term that's bubbling to the top at the moment) is so new and frothy that is difficult to determine how useful it actually is.
StrongDM's implementation is the most impressive I've seen myself, but it's also incredibly expensive. Is it worth the cost?
Cursor's FastRender experiment was also interesting but also expensive for what was achieved.
I think my favorite current example at the moment was Anthropic's $20,000 C compiler from the other day. But they're an AI vendor, demos from non-vendors carry more weight.
I've seen enough to be convinced that there's something there, but I'm also confident we aren't close to figuring out the optimal way of putting this stuff to work yet.