Is OpenAI: GPT-3.5 Turbo Instruct or O3 Deep Research cheaper?
OpenAI: GPT-3.5 Turbo Instruct is cheaper ($0.282 / 1M tokens input / $0.376 / 1M tokens output) vs O3 Deep Research ($1.88 / 1M tokens input / $7.52 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.