
GPT 5.6: What Sol, Terra, and Luna Mean for Brand Visibility
Your brand’s AI search visibility just got split into three lanes. On July 9, 2026, OpenAI launched GPT 5.6 as a three-tier model family: Sol, Terra, and Luna. Each tier runs a different depth of reasoning, pulls from different source pools, and cites different domains. The GEO strategy you calibrated against last month’s ChatGPT model […]












