OpenAI cuts GPT-5.6 API prices by over 20% for 3 months

OpenAI is reducing API and credit pricing for GPT-5.6 Sol by over 20% for the next 3 months, available at least through November 21, 2026. The price cut follows earlier reductions: 80% off GPT-5.6 Luna to $0.20 per million input tokens and $1.20 per million output, and 20% off GPT-5.6 Terra to $2/$12.