OpenAI cuts GPT-5.6 prices by up to 80%

OpenAI sharply cut API prices for GPT-5.6 Terra and Luna. Terra is down 20%, while Luna is down 80%.

The lower-tier models are now much more competitive on price-performance, reducing costs for developers.

OpenAI also introduced a high-speed option for GPT-5.6 Sol that processes requests faster.

The faster mode comes at a higher cost, making it better suited for latency-sensitive workloads.