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OpenAI releases powerful new GPT-5.6 model under restrictions

OpenAI has launched a limited preview of the GPT-5.6 model series, including Sol, Terra, and Luna. The company is staggering the release and restricting access to government-approved customers due to security concerns. The U.S. government is currently reviewing the models for cybersecurity risks.

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What changed

OpenAI shifted from a public rollout to a government-gated release for its GPT-5.6 models.

Live updates

  1. OpenAI Limits GPT-5.6 Rollout Following Trump Administration Security Request

    OpenAI has launched a limited preview of the GPT-5.6 model series, including Sol, Terra, and Luna. The company is staggering the release and restricting access to government-approved customers due to security concerns. The U.S. government is currently reviewing the models for cybersecurity risks.

    What's confirmed:

    • OpenAI released a new model series called GPT-5.6 consisting of Sol, Terra, and Luna.
    • The Trump administration requested that OpenAI stagger the release of the new model due to security concerns.
    • Access to the new models is limited to customers approved by the U.S. government.
    • Sol is the flagship and most security-hardened model in the GPT-5.6 series.
    • OpenAI announced the restricted preview release on June 26.

    Still unconfirmed:

    • The US government restricted the GPT-5.6 model to only about 20 approved clients.
    confidence 95%