OpenAI Releases GPT 5.6 Model Family with Structured Capability Tiers

OpenAI Launches GPT 5.6 Models Featuring Sol Terra and Luna Naming Structures with Advanced Reasoning and Government Regulatory Coordination

OpenAI just launched its 6 th iteration of models recently, a mere 2 months after the launch of GPT 5.5. The company has then unexpectedly unveiled its new naming structure for the technology and the capability groups it packages into. The number indicates the total generation of the neural network, but the company will also be listing a number of different names for various capability groups, with Sol as the flagship, Terra a medium optimal choice for application used daily, the Luna as a high speed, low cost utility.