How Do You Measure AI?

Millions of people use artificial intelligence (AI) tools like ChatGPT daily to do everything from generating code to drawing images to creating business ideas. Those AI tools appear to be getting better. Back in November 2022 when it was launched, ChatGPT was powered by GPT-3.5, at the time the most powerful model offered by OpenAI. Yet GPT-3.5 was quickly eclipsed by GPT-4 just a few months later. GPT-4 crushed GPT-3.5 on a range of benchmarks, including its performance on the bar exam (GPT-4 scored in the 90th percentile; GPT-3.5 in the 10th).