According to DeepLearning.AI on Twitter, the new 'Pretraining LLMs' course developed with UpstageAI highlights that while prompting or fine-tuning large language models (LLMs) is generally effective for broad language tasks, pretraining is crucial when targeting specialized domains or underrepresented languages. For AI-driven trading, this approach can enhance model accuracy in financial text analysis or crypto market sentiment when mainstream models fall short, offering a competitive edge for traders operating in niche or emerging markets (source: DeepLearning.AI, May 2, 2025).