Key Points
- OpenAI: OpenAI announced a limited preview of the GPT‑5.6 family—Sol, Terra and Luna.
- Sol is the new flagship, described as a step‑function improvement over GPT‑5.5.
- Terra delivers performance competitive with GPT‑5.5 at roughly 2× lower cost, and Luna is the most cost‑efficient model, offering strong capability at the lowest price.
- The company plans to make the three models generally available in the coming weeks, but the preview is currently limited to a small group of trusted partners in Codex and the API at the request of the U.S.
- government.
Account Highlights
- OpenAI (@OpenAI): 3 updates.
Updates by Account
OpenAI (@OpenAI)
Introducing a limited preview of GPT-5.6 Sol, our next generation frontier model, as well as GPT-5.6 Terra, a balanced model for efficient, everyday work, and GPT-5.6 Luna, a fast and affordable model for high-volume work.
Sol is our new flagship and a step function better than GPT-5.5.
Terra delivers performance competitive to GPT-5.5 at 2x lower cost.
Luna is our most cost-efficient model, delivering strong capability at our lowest cost.
Together, the GPT-5.6 family gives people and developers https://t.co/Wm7wF3abHN
We believe in broad access and plan to make GPT-5.6 Sol, Terra, and Luna generally available in the coming weeks.
For now, at the request of the U.S. government, we’re starting with a limited preview among a small group of trusted partners in Codex and the API.