Which Model

The cheapest model that passes your task, from measured runs. For developers and small teams picking a model for one job.

• GPT-4o mini is the cheapest model for tasks 2026-11-05

  For short English tasks as tested on 2026-11-04, the cheapest model that passes each kind is GPT-4o mini—except for dates-units and instructions, which need GPT-6 Luna.