By Dan Milmo,Kalyeena Makortoff,Aisha Down
Publication Date: 2026-04-22 15:03:00
Anthropic has ruled out releasing its latest AI model, Mythos, due to the threat it poses to global cybersecurity.
However, the US tech startup behind the Claude chatbot confirmed on Wednesday that it was investigating a report that a group of people had gained unauthorized access to Mythos. The alleged incident has raised concerns about the pace of development and the ability of tech companies to keep their riskiest products away from the public. Here we examine myth and its possible implications.
What is myth?
Mythos is an AI model – the underlying technology that powers tools like chatbots – that Anthropic says poses a serious potential threat to any company’s cybersecurity. Anthropic announced the existence of Mythos on April 7, but said it would not be released publicly because of its ability to identify unknown vulnerabilities in IT systems. These flaws could theoretically be exploited by hackers.
Anthropic said Mythos can identify and…