Are there any serious LLM engineering communities that have emerged post-hype cycle? Spaces where people are actually pushing boundaries with exploratory engineering, not just theorizing. Somewhere the focus is on testing limits and validating novel approaches - figuring out what's genuinely achievable with this tech.

I assume there's got to be, but I don't have the capacity these days to root around and find it, and I'm genuinely worried about missing out on some really cool shit.