GPT-6 Luna (ChatGPT, October 2026)
OpenAI · 2026-10-07
OpenAI's October 7, 2026 GPT-6 Luna model for everyday ChatGPT conversations, introduced for Free and Go users separately from the September Codex and ChatGPT Work model. The launch identifies the October artifact explicitly; its exact API identifier, maximum context and knowledge cutoff are not disclosed.