Funding and public interest. LLMs have been around for a while and they aren't really that different than they were a few years ago tech-wise. The question was

Funding and public interest. LLMs have been around for a while and they aren't really that different than they were a few years ago tech-wise. The question was always about being able to get good data and compute power for training/running them. Now that people understand the capabilities of the tech, it's got potential for profit and there's incentive to throw money at it.