It looks like GPT4 has approached an asymptote in quality (at least within a compute time window where they remain even marginally cost effective). Others are just catching up to that goalpost.
Even GPT4 suffers from the same problems intrinsic to all LLMs-- in real world use, hallucinations become a problem, they have a very difficult time with temporal relevance (i.e identifying when something is out of date), and they are horrifically bad at any kind of qualitative judgement.
Their initial moat was built with ChatGPT, which was launched less than a year ago and was surpassed by competitors in less than 6 months. Their current GPT4 is less than 6 months old. While your statement may be true for now, I don’t expect it will hold longer term. They have name recognition advantage, but so did AOL.
Agree with both and I work in information extraction too.
Most likely parsing unstructured data (a superset of NER).