# OpenAI to launch GPT-5.6 amid US national security concerns > Source: > Published: 2026-07-09 07:09:19+00:00 # OpenAI to launch GPT-5.6 amid US national security concerns [OpenAI](/topic/openai)is poised to launch its most advanced AI model, GPT-5.6 Sol, alongside lower-cost Terra and Luna models, following a delay prompted by US government national security concerns.- Experts have warned that advanced models could significantly accelerate sophisticated cyberattacks, with Washington intensifying its scrutiny of powerful AI model releases. *Axios*indicated that the[Trump](/topic/trump)administration approved the broad release of GPT-5.6 after additional testing and meetings between OpenAI and government officials.- Competitor [Anthropic](/topic/anthropic)had temporarily disabled its Mythos 5 and Fable 5 models following a US government export control order, which was subsequently lifted after safeguards were implemented. - OpenAI had previously granted only a small group of vetted partners access to GPT-5.6, and their details were shared with authorities.