Model identifier: gpt-6-luna.
OpenAI model for focused, high-volume tasks with configurable reasoning and tool use.
Available through the OpenAI API; free usage tier is not supported. Standard text rates in USD per million tokens: input $0.1; output $0.5. Above 272,000 input tokens, input/cache rates double and output rates increase 50% for the full request. Other service tiers and tools have separate charges. Tool use is supported through Responses; Chat Completions has model-specific restrictions. API access terms: https://openai.com/policies/services-agreement/
Official model documentation: https://developers.openai.com/api/docs/models/gpt-6-luna Researched on 23 October 2026. Undocumented specifications are omitted.