The markdown data is asking a question rather than providing information for an article summary. It is inquiring about the longest period Hacker News went without any posts related to Language Models (LLM) or Generative Pretrained Transformer (GPT) in its top 30 posts since the launch of ChatGPT.Key takeaways:
The provided text does not contain any information about an article. It seems to be a question about the frequency of posts related to LLM/GPT on Hacker News. Please provide the details or summary of the article for me to generate the key points.