I've never used an API key, yet the client displays a message saying the limit has been reached.

[_j]

Hi to Japan!

The quick answer: API services are not free.

Here’s the long answer - hope this is helpful!

FAQ: Getting started with the OpenAI API: Quickstart, billing, verification, prepayment, credits, '429' errors

The Quickstart before OpenAI’s Quickstart Welcome to the OpenAI Developer Community, a site for connecting with fellow AI enthusiasts and consumers of API-based AI products. You are probably not here as your first stop in learning or for pre-sales questions, but instead, you might have found the developer site only after encountering challenges in getting started on the API. I mean to collect and clarify all the information you’d want to know about the API… the preface that should come before e…