OpenAI will open up new network security model access to the European Union, but Anthropic remains reserved about Mythos.

OpenAI has stated that it will allow the European Union access to its new cybersecurity model, but Anthropic is still reserved about opening the Mythos model to the region. OpenAI company has announced that European partners, including businesses, governments, cybersecurity agencies, and the EU AI office, will be granted access to GPT-5.5-Cyber, a variant of its latest AI model. OpenAI has announced the limited preview version of the model will be released to audited cybersecurity teams. Just a month ago, Anthropic released their own Mythos model, sparking concerns about critical software being vulnerable to cyber attacks.