Explore the latest OpenAI models, including text-embeddings-small, text-embeddings-large, and GPT-4 Turbo Preview (0125), in this comprehensive 16-minute video tutorial. Learn how to perform multiple embedding calls concurrently using asyncio and make simultaneous GPT calls with threadpool executor. Compare the performance of GPT-3.5-turbo-1106 and GPT-4-0125 models in both JSON and regular modes. Discover techniques for embedding entire books using different models and apply cosine similarity for text comparison. Gain practical insights into working with these cutting-edge AI models through hands-on demonstrations and real-world examples.