The article discusses the backlash from the Reddit community towards Microsoft and Anthropic over their approach to training large language models (LLMs) and licensing these models. The key points are: 1) Microsoft and Anthropic have proposed a new metric called “perplexity” to measure the performance of LLMs during training, which has drawn criticism for being opaque and potentially misleading. 2) There are concerns about the companies’ plans to license their LLM models, with some arguing that this could stifle innovation and lead to a monopoly in the AI industry. 3) Reddit users have expressed frustration with the lack of transparency and the potential for these companies to exert control over the development and use of AI technology. 4) The debate highlights the ongoing tensions between commercial interests and the open-source ethos that has driven much of the progress in AI.