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Use case

Codex Auto Review tool calling

tool calling notes for codex-auto-review: the rate card, a worked volume, and when to send this ID. A sample of 1 million input tokens plus 200 thousand output tokens is about $0.088 on corouter (input $0.040, output $0.048).

Tool definitions count as input

Tool JSON schemas count toward input tokens. Input for codex-auto-review is $0.040. More tools and longer schemas raise the input bill. The output rate does not change.

Codex Auto Review is a distinct review ID, not an alias of Luna, even though the list rate is in the same low band. Send codex-auto-review when the caller asks for that ID.

Set it next to a lower output rate

Codex Auto Review (codex-auto-review) lists at $0.200 input and $1.20 output per million tokens. corouter bills $0.040 input and $0.240 output. Context is 1.1M.

A sample of 1 million input tokens plus 200 thousand output tokens is about $0.088 on corouter (input $0.040, output $0.048).

Questions

Which model ID should the request send?
Send codex-auto-review. 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.