GPT-6 Sol and Luna is a Large Language Models (LLMs) tool. Two AI models balancing frontier intelligence with cost efficiency for everyday work. Key features include Two Model Tiers, 50% Lower API Pricing, and Improved Factual Accuracy. Best for software developers and engineers, data scientists and analysts and content creators.
About GPT-6 Sol and Luna
GPT-6 Sol and Luna are large language models from OpenAI that bring GPT-6 Astra's intelligence to more affordable tiers. Sol handles complex coding and professional tasks, while Luna excels at high-volume clerical work like summarizing and data extraction.
Key Features
Two Model Tiers.
50% Lower API Pricing.
Improved Factual Accuracy.
Strong Coding Performance.
Advanced Prompt Caching.
Wide Availability.
Frequently Asked Questions
Sol is designed for complex work like coding, debugging, and agentic tasks that need careful reasoning. Luna is optimized for speed and high-volume clerical work like summarizing documents, extracting information, and answering quick questions. Sol costs more but offers stronger reasoning, while Luna is the cheapest model in the GPT-6 family.
GPT-6 Sol costs $2 per million input tokens and $10 per million output tokens. GPT-6 Luna costs $0.10 per million input tokens and $0.50 per million output tokens. Both are priced at 50% of their GPT-5.6 predecessors, and cached input reads get a 90% discount.
Both models are available through the OpenAI API. In ChatGPT, they're available in Work and Codex for Plus, Pro, Business, Enterprise, and Edu users. Free and Go users can access GPT-6 Luna through the ChatGPT desktop app. Enterprise administrators need to enable the models in their settings.
GPT-6 Astra remains OpenAI's most powerful model for the hardest tasks. Sol brings much of Astra's intelligence to a more affordable tier, making it better for everyday coding and professional work where you need to iterate more or handle higher volume. Sol costs about one-fifth of Astra's price.
