India, June 29 -- OpenAI's GPT-5.6 Sol is not just another model preview. Its restricted release points to a larger shift in artificial intelligence (AI). Cyber-capable models are now useful enough, and risky enough, that access controls are becoming part of the product. The GPT-5.6 family includes Sol, Terra, and Luna. Sol is the flagship model, Terra is positioned as a balanced option, and Luna is built for faster, lower-cost use. The larger story is the rollout. OpenAI is limiting access to a small group of trusted partners through the application programming interface (API) and Codex, rather than opening it broadly in ChatGPT.

That makes this launch feel less like a consumer upgrade and more like a controlled trial for high-risk AI ...