GPT-5.6 Sol is our most capable model yet for cybersecurity. It shifts the performance-efficiency frontier for long-horizon security tasks i…

GPT-5.6 Sol represents OpenAI's latest advancement in AI capabilities, specifically optimized for cybersecurity applications. The model demonstrates improved performance-efficiency tradeoffs, particularly for complex, long-horizon security tasks that require sustained reasoning and analysis. This release reflects continued progress in developing specialized AI systems for enterprise security challenges.

Source: OpenAI (X) | 2026-06-26