OpenAI launches GPT-6 Sol and Luna with 50% price cut

OpenAI has expanded its GPT-6 lineup with two new models, GPT-6 Sol and GPT-6 Luna. These models, built on the architecture of GPT-6 Astra, offer improved inference efficiency and caching, resulting in a 50% reduction in API costs compared to GPT-5.6. Sol is designed for complex coding and professional tasks, while Luna is optimized for daily operations. Both models show significant improvements in coding accuracy and factual reliability. They are currently available for ChatGPT Work and Codex subscribers, with Luna accessible to free users via the desktop application.