Overnight on Monday, OpenAI unveiled three new AI models: Sol, Terra, and Luna. Both Reuters and Storyboard18 confirm these models are currently in a limited preview with trusted partners, following a US government request for early safety review due to national security concerns.

Sol is described as OpenAI's most capable model yet, excelling in coding, biology, and cybersecurity. Terra and Luna are part of the GPT-5.6 family, with Terra offering GPT-5.5 performance at half the cost, and Luna f