Source: OpenAI — 2026-07-09
Summary
OpenAI publicly released the GPT-5.6 model family in three tiers — Sol (flagship reasoning/frontier work), Terra (balanced everyday model), and Luna (fastest and cheapest) — claiming new state-of-the-art results in coding, knowledge work, cybersecurity, and science at lower token cost than prior frontier models. The wider release followed a government-gated limited preview to "trusted partners" that began June 26.
Key Takeaways
- Three-tier pricing: Sol $5/$30 per million input/output tokens, Terra $2.50/$15, Luna $1/$6.
- Limited preview began June 26 and was reportedly tied to a request from the Trump administration before broader rollout was approved.
- Claims new state-of-the-art results across coding, knowledge work, cybersecurity, and science benchmarks.
- Shipped alongside a new "ChatGPT Work" tool, per Axios coverage of the launch.