OpenAI's Mercury project has recruited over 100 former investment bankers to enhance its finance-focused AI models. These experts are tasked with providing real-world deal data, formatting, and modeling logic to train the AI. Each contractor is responsible for building one financial model per week, which is then reviewed to ensure it meets Wall Street standards. The initiative aims to automate repetitive financial tasks, such as IPOs and restructurings, while adhering to professional conventions and language used in the industry.