OpenAI API pricing

OpenAI publishes three models here, all from one generation and separated by price alone: $1, $2.50 and $5 per million input tokens, with output fixed at six times input in every case, $6, $15 and $30. Each declares a 1,050,000-token context and the same reasoning, tools, structured output and vision parameters, and each discounts cached input to a tenth of the uncached rate. Two billing rules apply across the line: cache writes cost 1.25 times uncached input, and any request over 272K input tokens is billed at twice the input rate and one and a half times the output rate for the whole request.

Model families

Several models share one commercial name. These pages compare the members of a family side by side.

• GPT-5.63 models compared