OpenAI is giving the EU access to its most powerful cybersecurity AI model. Anthropic is not. OpenAI announced today it will grant EU partners, including governments, businesses, and EU institutions, access to GPT-5.5-Cyber, a model built specifically for cyber defense. George Osborne, OpenAI's Head of Countries, said advanced AI-powered defense tools should be accessible to Europe's broader community of defenders, not just a select few. The EU Commission welcomed the move. Spokesperson Thomas Regnier confirmed further discussions this week and said access "will allow us to follow deployment of the model very closely and address security concerns." Anthropic has not made the same offer. The EU has held four or five meetings with Anthropic about access to Claude Mythos, a competing cybersecurity model launched last month that Anthropic says can outperform human researchers at finding software vulnerabilities. But the Commission says those discussions are "not yet at the same stage as the solution we have on the table from OpenAI."