A chart created by METR, a nonprofit A.I. organization, has become an industrywide obsession as it measures the rapid development of big A.I. systems.

A.I. has always been compared to human intelligence, but that may not be the right way to think about it. What it does well can help predict what jobs it may replace.

For us to trust it on certain subjects, researchers in the growing field of interpretability might need to learn how to open the black box of its brain.

The maker of ChatGPT announced the limited release of GPT-5.4-Cyber, a technology designed to find security holes in software.