The report highlights that government ban on Anthropic’s powerful Fable and Mythos models has everybody spooked. That’s why it’s a little surprising that OpenAI, Anthropic’s biggest rival, is slowly rolling out its most recent and most powerful GPT models. The U.S.

According to the latest update, it comes in three flavors: the flagship Sol model, the everyday Terra, and the fast-and-efficient Luna. Those models map roughly to the Opus, Sonnet, and Haiku configuration of Anthropic’s Claude models. Yes, the GPT-5.6 series of models is here, but not for everyone.

As part of the ongoing story, that said, Sol is really more of a competitor to Fable and Mythos, the two Claude models that were slapped with expert restrictions by the Trump Administration earlier this month over fears they were too dangerous for broad drop.

In a fresh development, ban), GPT-5.6 Sol is being billed as OpenAI’s “strongest model yet,” complete with robust coding, biology, and cybersecurity capabilities. Like Fable and particularly Mythos (which was restricted to only a small group of handpicked users and organizations even before the U.S.

According to the latest update, but while Anthropic put Claude Fable into general drop before being ordered to pull it down days later, OpenAI said its GPT-5.6 models will start off in a “limited preview” for just a “select group of trusted partners and organizations” – meaning, basically, not you.

The report highlights that government of its “plans and the models’ capabilities,” and was limiting the rollout of the models “at their request.”. In a press drop announcing the fresh models, OpenAI said it had notified the U.S.

The report highlights that while allowing that the “limited” drop for GPT-5.6 will help ensure “the strongest path to broader availability in the coming weeks,” OpenAI warned that “this kind of government access process … keeps the best tools from users, developers, enterprises, cyber defenders, and worldwide partners who need them.”.

In a fresh development, anticipating the concerns raised by Anthropic’s Fable and Mythos models, which are said to have breached sensitive national security systems “in hours,” OpenAI went to great lengths to detail GPT 5.6’s “layered” safeguards, including against jailbreaking and “real-global stage adversarial pressure.”.

In a fresh development, but just as Claude Fable and Mythos remain in a regulatory limbo, it’s not at all clear when the U.S. Government will give the all-clear for the GPT-5.6 series to go into wide drop. OpenAI said it anticipates that GPT-5.6 Sol, Terra, and Luna will be dropped “soon” to general users.

As part of the ongoing story, his coverage of artificial intelligence interrogates the most recent LLMs, and how they can be used at work and at home to be best prepared for the AI revolution. “AI is going to change our lives sooner than we think,” Ben writes. “Our best way to adapt is by using it every day.” Ben has been a PCWorld author since 2014, and has covered everything from laptops to security cameras before launching PCWorld’s AI beat. Ben's articles have also appeared in PC Magazine, TIME, Wired, CNET, Men's Fitness, Mobile Magazine, and more. Ben holds a master's degree in English literature. Ben has been writing about consumer technology for more than 20 years, and now focuses his reporting on AI as it relates to the basic human experience.