OpenAI’s GPT-5.6 Lineup Goes Public Tomorrow
OpenAI is releasing GPT-5.6 Sol, Terra, and Luna tomorrow, with preview access already expanding globally. Sol is positioned as the flagship model, Terra as a balanced everyday-work option, and Luna as a fast, lower-cost model.
- The lineup splits GPT-5.6 into three distinct tiers rather than one general-purpose release.
- Terra is framed as competitive with GPT-5.5 while being 2x cheaper for everyday workloads.
- Luna is aimed at users who want OpenAI’s lowest cost while keeping strong model capability.
