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OpenAI·Sep 22, 2026·v6.0·paid

GPT-6 Sol and Luna

GPT-6 Sol and Luna are the latest additions to the GPT-6 model family, designed to provide high-performance intelligence at improved cost-efficiency. These models leverage the advanced reasoning and alignment capabilities of GPT-6 Astra, optimized for professional workflows, coding, and computer-use tasks.

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on the blogOpenAI Launches GPT-6 Sol and Luna: Astra-Level Performance at Half the Cost 4 min
overview

GPT-6 Sol and Luna are the latest additions to the GPT-6 model family, designed to provide high-performance intelligence at improved cost-efficiency. These models leverage the advanced reasoning and alignment capabilities of GPT-6 Astra, optimized for professional workflows, coding, and computer-use tasks.

key features
  • 01Advanced coding performance with high mergeability scores on FrontierCode
  • 02Cost-efficient inference for high-volume and latency-sensitive applications
  • 03Improved communication style with greater clarity and reduced jargon
  • 04Enhanced computer-use capabilities for long-horizon workflows
  • 05Optimized for professional work, factuality, and complex software engineering
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