GPT-6 Sol & Luna

GPT-6 Sol & Luna are two new models in OpenAI's GPT-6 family, trained like Astra and offered at 50% lower API pricing. They deliver near-Astra performance in factuality, coding, and computer use, improved prompt caching with 90% off cached reads, and alignment improvements. The models are available in ChatGPT Work, Codex, and via API.