OpenAI to give EU access to new cyber model but Anthropic still holding out on Mythos

OpenAI said Monday it would grant the European Union access to its new cyber model, but Anthropic is still holding out on releasing Mythos to the bloc.

European partners including businesses, governments, cyber authorities and EU institutions such as the EU AI office, would be granted access to OpenAI's GPT-5.5-Cyber, a variation of its latest AI model, the company said.