OpenAI is set to launch a new, advanced GPT model, described as its most capable or strongest yet, following a delayed rollout. The model is referred to as GPT-5.6 in some reports, although OpenAI itself has also mentioned a GPT-5.5 model, introducing some uncertainty about the specific model being released. The launch is proceeding amid reports of national security concerns and coincides with other tech releases, including one from Elon Musk.