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GPT-5.6 Sol, Terra, Luna Models Set to Launch This Thursday

·2026.07.08 09:00

Key point

OpenAI is releasing three GPT-5.6 series models, including its flagship model Sol.

Details

OpenAI will officially launch GPT-5.6 Sol, Terra, and Luna tomorrow, and is currently expanding preview access worldwide.

The features of each model are as follows:

  • Sol: The flagship model of this series
  • Terra: A balanced model optimized for everyday tasks, costing 2x cheaper than GPT-5.5
  • Luna: A highly efficient model delivering strong performance at the lowest cost
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