[OpenAI Officially Launches GPT-5.6 Series Models] Foresight News reports that OpenAI has announced the official launch of the GPT-5.6 series models, including the flagship model Sol, the balanced model Terra, and the cost-effective model Luna. The models are now available to global users through ChatGPT, Codex, and APIs, with API pricing following a tiered structure. Among them, Sol supports the new Ultra mode, which can natively coordinate four AI agents to process complex tasks in parallel, further enhancing efficiency in scenarios such as code development, scientific research, cybersecurity, and knowledge work.