OpenAI has unveiled GPT-4 Turbo, a more powerful and cost-effective successor to GPT-4 that offers enhanced context processing and the flexibility for fine-tuning to meet user requirements. The update is available in two versions, one for text and another that processes images, with prices as low as $0.01 per 1,000 text tokens and $0.03 per 1,000 image tokens. Fine-tuning involves feeding a model extensive custom data to learn specific behaviors, transforming large generic models like GPT-4 into specialized tools for niche tasks without building an entirely new model. This innovation marks a significant shift in AI technology, with potential impacts spanning from customer support to content creation.