AI-safety

Anthropic's Claude Opus 4.8 demonstrated better uncertainty handling than its predecessor in independent testing across coding, medical, and financial scenarios. However, the model exhibited a significant judgment error in a legal reasoning test involving travel insurance claims, according to results published by ZDNET.

Mozilla's Firefox team reports that Anthropic's Mythos model has discovered thousands of high-severity security vulnerabilities, including bugs that had remained undetected for more than 15 years. In April 2026, Firefox shipped 423 bug fixes compared to just 31 in April 2025, marking a 13x increase attributed to AI-assisted vulnerability detection.