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OpenAI on Friday launched a US-only preview of its latest powerful AI model series to a limited group of partners at the request of the United States government, the company said.
The release comes two weeks after the US government took Silicon Valley by surprise in ordering OpenAI’s rival Anthropic to ban all foreign nationals from accessing its Fable 5 and Mythos 5 models, citing national security concerns.
The release marks the debut of OpenAI’s GPT-5.6 series, which comprises three new models: Sol, OpenAI’s new flagship; Terra, a mid-range model for everyday work; and Luna, a fast, low-cost option.
The company said Terra would be priced at half the cost of its predecessor GPT-5.5, as it seeks to lock in customers amid fierce competition from Anthropic and Google.
