OpenAI cut GPT-5.6 API prices up to 80% in July 2026 and replaced Priority Processing with Fast mode
OpenAI's July 30, 2026 update drops GPT-5.6 Luna to $0.20/$1.20 and Terra to $2/$12 per million tokens and folds Priority Processing into a new Fast mode. What changes for your LLM spend, and how to migrate.
