ChatGPT developer OpenAI is restricting access to its latest artificial intelligence (AI) model at the request of the US government, the company said on Friday.
In a blog post, the company said it had launched a "limited preview" of its GPT-5.6 series Sol, Terra and Luna.
"As part of our ongoing engagement with the U.S. government, we previewed our plans and the models' capabilities ahead of today's launch," the post said.
"At their request, we are starting with a limited preview for a small group of trusted partners whose participation has been shared with the government, before releasing more broadly."
The company said it planned to make the models generally available in the coming weeks.
"We don't believe this kind of government access process should become the long-term default. It keeps the best tools from users, developers, enterprises, cyber defenders, and global partners who need them."
Earlier this month, OpenAI's competitors Anthropic blocked access to its newly released software, following an order by the US government. Anthropic said government agencies had instructed it to prevent all foreign nationals from accessing the AI models Fable 5 and Mythos 5, citing national security concerns. As a result of the order, the company had to cut off access for everyone at short notice, it said.
