Is GPT-4.1 or GPT‑6 Luna cheaper?
GPT‑6 Luna is cheaper ($0.1 / 1M tokens input / $0.5 / 1M tokens output) vs GPT-4.1 ($2 / 1M tokens input / $8 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.