Executive summary
2026 was the year AI stopped being judged mainly on benchmarks and started being judged on what it could do in the world — including things nobody wanted it to do. Frontier models learned to find and exploit software vulnerabilities faster than defenders could patch them, governments moved from hands-off to hands-on, and the money got big enough to reshape public markets.
Five storylines defined the year:
On April 7, Anthropic announced Claude Mythos Preview and declined to release it publicly, saying it posed too great a cybersecurity risk. Instead it gave access to a small set of partners through Project Glasswing, which grew from 12 organizations at launch to 50 by late May, with over 10,000 high- or critical-severity vulnerabilities identified. AI moved from chat windows into workflows in 2026, and its effect on jobs showed up less as mass layoffs than as a quiet freeze on hiring at the bottom of the career ladder.