GPT-6 Sol and Luna arrive with 50% lower API prices OpenAI has expanded GPT-6 with the GPT-6 Sol and GPT-6 Luna models. Both are available in ChatGPT Work and Codex for Plus, Pro, Business, Enterprise, and Edu users. Free and Go users can access GPT-6 Luna in the desktop app. The models are not yet available in Chat. OpenAI API users can access them as gpt-6-sol and gpt-6-luna. A phased ChatGPT rollout is underway to maintain service stability. Performance