OpenAI's GPT-5.6-Cyber Reduces Refusals on Exploit Development and Zero-Day Discovery

OpenAI has introduced GPT-5.6-Cyber, a model built on GPT-5.6 Sol and available through the Daybreak Red tier of its cybersecurity program. The model is trained to reduce refusals on dual-use tasks including zero-day discovery and exploit chain development, engaging with requests standard frontier models would decline. Access is restricted to approved partners conducting authorized security work.