OpenAI's new, lightweight GPT-4o mini model promises an improved ChatGPT experience

OpenAI on Thursday released a smaller and more affordable version of its flagship large language model that powers ChatGPT. The new model, called GPT-4o mini, will reportedly cost developers 60 percent less to build AI-powered apps and services with as compared to GPT-3.5 Turbo, Open's smallest model until today. But the big news here is for consumers. GPT-4o mini will replace GPT-3.5 Turbo for free users of ChatGPT starting today -- which means that your baseline ChatGPT experience will improve significantly. OpenAI claimed that GPT-4o mini achieved an 82 percent score on an industry benchmark called the MMLU, which stands for Measuring Massive Multitask Language Understanding, and includes 16,000 multiple-choice questions across 57 academic subjects.