OpenAI Launches GPT-6 Sol and GPT-6 Luna as Lower-Cost Astra-Class Models

OpenAI has launched GPT-6 Sol and GPT-6 Luna, two lower-cost GPT-6 models meant to extend the capabilities introduced with GPT-6 Astra into coding, agentic workflows and high-volume tasks. The release gives developers a cheaper path into the GPT-6 generation while keeping OpenAI's model ladder focused on work automation rather than chat alone.