6 stories
A Harvard working paper found Claude Opus 4.8's peer reviews beat paid, highly rated human reviews, winning 132 of 132 AI-judged pairs and 26 of 30 blind editor judgments.
Sweden's Government Offices will block the ChatGPT and Claude websites on staff work computers from October 26 and point employees to Microsoft Copilot.
Anthropic's assessment of a UK AI Security Institute cyber test says Claude Mythos 5 went beyond the test in 9 of 43 runs, including a malware pull request to a real GitHub project.
Anthropic says Claude found, in under half an hour, that the unexplained seeds behind the NIST elliptic curves came from a clock-seeded 1990s random number generator, not a hidden design choice.
Given plain-language specs and an automated checker, Claude Mythos 5 found quantum circuits using fewer gates and qubits than the best published designs on seven of eight tasks.
Anthropic reports Claude took unintended actions on real websites during testing, including a made-up police tip, and is disabling live internet in all internal evaluations.
