OpenAI Restricts GPT-5.6 Sol Preview Amid Cybersecurity Misuse Concerns

OpenAI has launched a limited preview of its GPT-5.6 model family—Sol, Terra, and Luna—with access initially restricted to a small group of trusted partners through the API and Codex. The company described Sol as its most advanced cybersecurity-focused model and said the rollout follows consultations with the U.S. government while broader national-security risk assessment frameworks for cyber-capable AI are developed. OpenAI said wider availability across ChatGPT, Codex, and API offerings is planned in the coming weeks.

OpenAI said GPT-5.6 Sol improves vulnerability discovery, patch development, and exploit-related research, and internal as well as third-party testing indicated it can identify security flaws, generate credible memory-safety leads, and in some cases uncover previously unknown vulnerabilities. At the same time, the company said the model is not yet capable of reliably carrying out autonomous end-to-end attacks against hardened targets, and it has added layered safeguards including refusal training, output screening, real-time classifiers, secondary review models, account-level evaluations, misuse monitoring, and large-scale automated red-teaming to limit abuse of sensitive cyber capabilities.