ai pricing tiers

  1. GPT-5.6 Sol, Terra, Luna Preview: Tiered AI, Lower Costs, and a Government-Gated Launch

    OpenAI launched GPT-5.6 on June 26, 2026, as a limited preview of three models called Sol, Terra, and Luna, with access initially restricted to selected partners after a U.S. government request. The announcement should have been a straightforward model-tier story: more capability, lower token...