OpenAI launches GPT-5.6 Sol, Terra and Luna on 9 July
OpenAI has commenced the public launch of its GPT-5.6 family, including the Sol, Terra, and Luna models, starting 9 July 2026. The models are being deployed globally across ChatGPT, Codex, and the OpenAI API.
What happened?
On 9 July 2026, OpenAI initiated general availability for its GPT-5.6 model family. The models, named Sol, Terra, and Luna, are being progressively distributed to ChatGPT, Codex, and via the OpenAI API. This marks the end of a limited preview period, with the models now scalably available to a broader global user base.
Key facts
| Lanseringsdatum | 9 juli 2026 |
|---|---|
| Modellnamn | GPT-5.6 Sol, Terra, Luna |
| Tillgänglighet | ChatGPT, Codex, OpenAI API |
| Rollout | Global, gradvis konto-för-konto |
”OpenAI’s GPT-5.6 model family is no longer merely “set” for public release: GPT-5.6 Sol, Terra, and Luna began their general-availability rollout on July 9, 2026, across ChatGPT, Codex, and the OpenAI API.”
Why it matters
The launch is significant as it makes the GPT-5.6 models directly applicable for various functions, including programming, automation, and document management. Despite the global rollout, availability may vary depending on specific products, subscription plans, regions, and accounts, implying a gradual implementation for individual users. Sol is the flagship model for reasoning, Terra is a more balanced and cost-effective alternative, while Luna is the fastest.
Who is affected?
Users of ChatGPT, developers working with the OpenAI API, and those using Codex are affected. IT teams and organisations integrating AI into their workflows will be able to leverage the new models for improved efficiency. Access remains dependent on account type and region.
Impact on the EU
The launch is global, including users within the EU. However, the phased rollout means availability may be delayed for certain accounts and regions within the European Union. Not applicable for EU status.
What else you should know
OpenAI confirms the rollout date of 9 July 2026 for the models but notes that this is not a universal launch and will occur successively. Some eligible accounts may experience a wait before the models appear in their applications.
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