The AI Security Institute, which has tested both Anthropic’s Mythos and OpenAI’s GPT-5.5 Cyber, said in its report that they reached “a similar level of performance” in the tasks it set them.<\/p>\n
Last week Bank of England governor Andrew Bailey warned that UK banks were still unable to access Mythos to test the security of their own digital systems and apps.<\/p>\n
Former UK Chancellor George Osborne, who is now a senior executive at OpenAI, told the BBC that Bailey had not contacted him directly. He said his firm did not want to “hide [5.5 Cyber] away or keep it to ourselves” but confirmed that, like Mythos, it would not become available to all.<\/p>\n
“The key things with these tools is that they need to be in the hands of the right people,” he said.<\/p>\n
“We want to make sure that the forces that are establishing order in our democracies have these tools, and the forces that want to disrupt us or commit crime, do not.”<\/p>\n
The UK banks which will now gain access to OpenAI’s GPT 5.5 Cyber include Lloyds Banking Group, HSBC and Nationwide. NatWest and Santander already have access under existing agreements.<\/p>\n
The BBC has asked Anthropic whether it plans to grant UK financial institutions’ access to Mythos.<\/p>\n
Anthropic initially opened it up to a collective of 42 companies, mostly other US tech firms.<\/p>\n","protected":false},"excerpt":{"rendered":"The AI Security Institute, which has tested both Anthropic’s Mythos and OpenAI’s GPT-5.5 Cyber, said in its report…\n","protected":false},"author":2,"featured_media":615418,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[554,733,4308,86,56,54,55],"class_list":["post-615417","post","type-post","status-publish","format-standard","has-post-thumbnail","category-artificial-intelligence","tag-ai","tag-artificial-intelligence","tag-artificialintelligence","tag-technology","tag-uk","tag-united-kingdom","tag-unitedkingdom"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/615417","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=615417"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/615417\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/615418"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=615417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=615417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=615417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}