AI Safety Newsletter #61: OpenAI Releases GPT-5

OpenAI released GPT-5, a system combining two models: a fast base model for creative tasks and a reasoning model for coding and math, which routes queries appropriately based on user input. GPT-5 achieves state-of-the-art performance on several benchmarks and significantly reduces hallucinations (false information generation) compared to previous models, particularly helping with healthcare applications where accuracy matters. However, GPT-5 is best understood as consolidating features from models released since GPT-4 rather than a major leap forward, and it doesn't lead on all benchmarks.