GPT-6 Luna

Product news: GPT-6 Sol and Luna broaden lower-cost model choices for educational and research workflows

OpenAI

AI Product and Learning Report

OpenAI released GPT-6 Sol and Luna on September 22, extending its model family with lower-priced options for coding, professional work, and computer use. This September 23 report focuses on choosing a model for a specific educational task. Anthropic's same-day Opus 5.5 release and Gemini's inquiry tools provide context. Token prices matter, but a useful comparison also includes errors, retries, review effort, and what learners are expected to do themselves.