GPT-5.3 Codex prepaid credits

Prepaid credits, not a vendor subscription

Create a console account, add at least $5, and spend it on gpt-5.3-codex. There is no subscription tier. Developers in mainland China use the same path: prepaid USD credits and requests to https://api.corouter.co.

corouter is not affiliated with OpenAI or Anthropic, and it does not promise network reachability. The account, the balance, and the rate card are what the console and this site publish.

The rate for this ID

GPT-5.3 Codex (gpt-5.3-codex) lists at $1.75 input and $14.00 output per million tokens. corouter bills $0.350 input and $2.80 output. Context is 272K.

GPT-5.3 Codex is a coding ID with a 272K window. Its list rate matches GPT-5.2 Codex; the difference you bill is the ID itself, gpt-5.3-codex.

A sample of 1 million input tokens plus 200 thousand output tokens is about $0.910 on corouter (input $0.350, output $0.560).

Questions

Which model ID should the request send?

Send gpt-5.3-codex. Do not put a different name in the model field.

What is the minimum top-up?

Prepaid credits, $5 minimum top-up, no subscription tier.