OpenAI's GPT-5.6: "Many Changes" & Security Review

ChatGPT-maker OpenAI is set to release its most powerful artificial intelligence model to the public. The company's CEO says they made "many changes" to the system during a security review with the US government. US officials tested the model and flagged concerns during the process. OpenAI's new GPT-5.6 offerings, and other AI models, have drawn concern over their ability to identify weaknesses in code that hackers could exploit. This raised national security fears. OpenAI shared preview access to GPT-5.6 with a limited group of trusted US-based partners at Washington's request. The GPT-5.6 series has three tiers: Sol, the flagship model; Terra, a mid-range version; and Luna, a fast, low-cost option. The CEO touted Sol's performance, saying it's "not only the best model in the world for most people" but also "54 percent more token efficient on tasks" than competing models. Tokens are the industry unit of AI usage and are often used for pricing. This launch signals continued advancements and competition in the rapidly evolving AI landscape.