OpenAI previews GPT-5.6 with Sol, Terra, and Luna tiers, new max and ultra reasoning modes, pricing, and access.

OpenAI launched Sol, its most powerful model, to about 20 partners approved by Washington under Trump's AI executive order. Broad access comes later.

On Friday, the company unveiled the limited preview of its new GPT 5.6 model suite: Sol, Terra, and Luna.

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Link to: https://openai.com/index/previewing-gpt-5-6-sol/