In December 2023, OpenAI launched its "12 Days of OpenAI" announcements, while Google unveiled its Gemini 2.0 Flash Thinking model and other innovations. A significant highlight was the introduction of DeepSeek-V3, a large mixture-of-experts model with 671 billion parameters, offering competitive performance at one-tenth the training cost of other leading models. This showcases advancements in AI and programming amidst the typically quiet month.