GPT-4's dominance lasted a year while today's top models barely survive seven weeks at the top

OpenAI's GPT-4 led the Epoch Capabilities Index for about a year, far longer than any model since. Since Claude 3 Opus took the top spot in February 2024, the lead has changed hands 17 times, with a median stay of just seven weeks. Competition is fiercer now, but the capability gains between models