OpenAI launched its 2024 DevDay event in San Francisco, introducing four significant API updates designed to enhance voice assistant development. Notable features include the Realtime API for streamlined speech conversations, model distillation for cost-effective customization, and vision fine-tuning for improved image recognition. Unlike last year, CEO Sam Altman did not present a keynote, allowing the focus to shift to technology advancements amidst recent internal changes at the company.