Anthropic blocks UK AI safety body from testing latest model

Anthropic has withheld its latest advanced artificial intelligence model from Britain’s AI Security Institute (AISI) ahead of its release, raising concerns inside the UK government that US restrictions on AI technology may be spreading to private companies. Anthropic launched Claude Mythos 5.1 last week as a specialised version of its AI technology aimed at selected professionals working in cybersecurity and life sciences. The company has described the model as its most advanced system for these fields. In life sciences, Mythos 5.1 has demonstrated the ability to design high-affinity molecular binders, which can play an important role in developing medicines and other biological applications. Do you think Anthropic has the right to block a safety body?