OpenAI Releases GPT-5.6 Sol, Terra & Luna Worldwide
After passing a White House cybersecurity review, OpenAI publicly released three GPT-5.6 models on July 9. Sol is optimized for top-tier reasoning and long-horizon agentic tasks, Terra delivers GPT-5.5-level performance at half the cost, and Luna is the lowest-cost option. The AI Standards and Innovation Center (CAIS) under the US Commerce Department approved the broad release after additional review of cyber vulnerability research and exploit capabilities, Dataconomy reported.