OpenAI has announced that it will make its GPT-5.6 models, named Sol, Terra, and Luna, available to the public on Thursday. This decision comes approximately two weeks after the company had initially restricted access to a limited group of trusted partners at the request of the U.S. government.
"Happy building," stated OpenAI's CEO, Sam Altman, in a Tuesday post on X.
The introduction of these models was first disclosed in June, when OpenAI committed to sharing them with a select number of organizations, a list that was communicated to government officials. The company expressed its belief in promoting "broad access" and aims to expand availability in the upcoming weeks.
OpenAI emphasized that it does not support the idea of a long-term government access framework, arguing that such practices keep essential tools away from users, developers, enterprises, cybersecurity professionals, and global partners who require them.
The public debut of the GPT-5.6 models follows a similar move by OpenAI's competitor, Anthropic, which recently regained access to its models, Claude Fable 5 and Mythos 5, after navigating a weeks-long conflict with the government. This situation arose when Anthropic had to restrict access due to an export control directive, which the U.S. Department of Commerce lifted just last month.



