Use case
GPT-5.6 Terra image input
image input notes for gpt-5.6-terra: 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 $0.880 on corouter (input $0.400, output $0.480).
Images count as input
GPT-5.6 Terra lists Vision. Image tokens bill at the input rate of $0.400. Generated text still bills at the output rate of $2.40.
GPT-5.6 Terra is listed with these modalities: Chat, Reasoning, Vision.
This ID
GPT-5.6 Terra sits between Sol and Luna on the GPT-5.6 rate card and does not carry the Code modality tag. Send gpt-5.6-terra for long-context chat and vision at the mid rate.
A sample of 1 million input tokens plus 200 thousand output tokens is about $0.880 on corouter (input $0.400, output $0.480).
Questions
- Which model ID should the request send?
- Send gpt-5.6-terra. 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.

