OpenAI Expands GPT-6 Universe with Sol and Luna Models

01 What happened

OpenAI has expanded its GPT-6 lineup with two new variants, GPT-6 Sol and GPT-6 Luna. Both models are now integrated into ChatGPT Work and the Codex platform for Plus, Pro, Business, Enterprise, and Edu subscribers.

02 Key details

• OpenAI reports that API pricing for Sol and Luna is 50% lower than the previously available promotional pricing for GPT-5.6.
• Improved prompt caching architecture now allows for a 90% discount on cached input-token reads when context is reused.

03 Why it matters

These improvements address the cost-efficiency of integrating advanced AI into scalable workflows, allowing for more economical handling of context-heavy applications.

04 Who it matters to

Software developers, enterprise AI customers and AI developers.