OpenAI releases GPT-6 Sol and GPT-6 Luna
OpenAI released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna), reasoning models that take text and images and return text through the Responses and Chat Completions APIs. Standard prices per 1M tokens for prompts of up to 272K input tokens: Sol $2 input, $0.20 cached input, $10 output; Luna $0.10, $0.01 and $0.50.
Models: GPT-6 Sol, GPT-6 Luna
Source: OpenAI API changelog, checked Sep 28, 2026. Summarized from the provider’s announcement.