OpenAI has officially announced that it will open its most advanced cybersecurity large model, GPT-5.5-Cyber, to the European Union. This move not only marks the cross-border deployment of top AI models, but also has drawn deep attention from the outside world regarding the security regulation and compliance progress of major technology companies.

According to the latest industry updates, access to GPT-5.5-Cyber will be precisely granted to key departments such as enterprises, government agencies, cybersecurity experts, and the EU AI Office. OpenAI's move is seen as a critical step in strengthening global cyber defense cooperation, aiming to use the powerful understanding and analytical capabilities of large models to help relevant institutions more effectively deal with increasingly complex cybersecurity challenges.

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The European Commission has shown a positive attitude towards this collaboration. Its spokesperson praised OpenAI's transparency during a press conference and emphasized that this willingness to open up will allow regulators to track the actual deployment of the model in real-time and closely monitor potential cybersecurity risks, thus enabling more targeted handling of them.

In contrast, OpenAI's rival Anthropic has made relatively slow progress in Europe. Although the company launched a cybersecurity model called Mythos with great fanfare a month ago, which even once triggered concerns about software security, Mythos has not yet obtained the "entry ticket" to the EU market until now.

It is reported that the EU is currently conducting intensive negotiations with Anthropic on access issues. Although both sides have held four to five rounds of talks, the progress is far behind that of OpenAI. Insider information reveals that the current discussions are still at the procedural level and have not yet reached the stage of specific solutions. This difference in compliance progress has led to a completely different situation in the global layout of security models.