OpenAI to unveil GPT-5.6 on Thursday after national security delay

OpenAI is set to release its most capable AI model, GPT-5.6, on Thursday. The launch was postponed last month at the request of the US government, which cited national security concerns over the potential misuse of advanced AI systems.

This development follows the US government's decision last week to lift curbs on Anthropic's AI models, Fable and Mythos, which had been suspended for national security risks just three weeks prior. Washington has intensified its review of powerful AI model releases, fearing they could be exploited by countries like China and Russia.

Axios reported, citing a source familiar with the matter, that the US Department of Commerce has approved the broad launch of GPT-5.6. This approval came after additional government testing under a new oversight framework for frontier AI. Initially, OpenAI had restricted access to a small group of vetted partners whose details were shared with authorities.

OpenAI announced on X that it plans to launch GPT-5.6 Sol, alongside its Terra and Luna models. Sol is described as OpenAI's most advanced model, while Terra is a mid-tier, lower-cost option, and Luna is the most cost-efficient. The White House and the US Department of Commerce did not immediately respond to requests for comment.

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