Is Gemini 3.1 Pro Preview or GPT-4.1 Mini cheaper?
GPT-4.1 Mini is cheaper ($0.4 / 1M tokens input / $1.60 / 1M tokens output) vs Gemini 3.1 Pro Preview ($2 / 1M tokens input / $12 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.