OpenAI Previews GPT-5.6 Sol with Limited U.S. Government-Approved Release
OpenAI released GPT-5.6 on June 26 with three models - Sol, Terra, and Luna - but at the U.S. government's request limited initial access to about 20 approved organizations. The flagship Sol model shows strong cybersecurity capabilities without crossing OpenAI's critical threshold, while Terra offers competitive performance at half the cost of GPT-5.5.
· OpenAI
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