US Government Lifts Restrictions, OpenAI to Launch GPT-5.6 Models Publicly Tomorrow

The US government has removed restrictions and approved the public launch of OpenAI's new GPT-5.6 model series, according to Axios. OpenAI announced that the series, which includes the Sol, Terra, and Luna models, will be released to the public this Thursday. Access to the preview is already being expanded globally, though initial availability is expected to be limited to paying subscribers.

The GPT-5.6 lineup features Sol as the most powerful and expensive model, designed for complex tasks such as advanced coding, research, professional analysis, and cybersecurity. Terra serves as a mid-tier model suitable for everyday tasks like writing, analysis, and standard coding, while Luna is the fastest and most affordable, intended for simpler and quicker tasks.

About two weeks ago, GPT-5.6 was launched to a select group of organizations that underwent background checks and government screening due to concerns about the new AI models' potential to breach cybersecurity defenses, disrupt critical industries, and transfer advanced technology to countries like China. Following additional evaluations and meetings between OpenAI and government officials, the US government granted approval for a broader release.

These assessments were conducted by the Center for AI Standards and Innovation within the Department of Commerce, with OpenAI sending technical experts to Washington, D.C. to address any questions. Last week, the US government also lifted restrictions on advanced models from Anthropic, including Claude Mythos and Claude Feibel, after several weeks of suspension.