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Why doesn't a model offer the ratio, video length or file format I want?

Each model supports only its own fixed values, so here's how to see them and what to do when the one you want isn't listed.

Each model has its own fixed values: an unlisted ratio, video length, output format or file count, such as 21:9 or a longer video, isn't supported by that model. It's not a bug.

  • Allowed values: each field on the model page lists them, with more under Show advanced configurations. In the API, Tool/Detail's tool[0].parameters gives each select's allowed values in options (see Discovering Parameters).

  • In the API, other values get Request parameter [ratio] must be one of: ... or, for numbers, must be between ... and ...

  • Another model may have it: openai/gpt-image-2 has no 21:9, but openai/gpt-image-2-custom takes Width and Height, and google/nano-banana offers 21:9.

  • Optional setting left out of an API request? Wiro uses its default value, and the price follows it.

  • Output file type: only a model setting, such as Output Format on openai/gpt-image-2, picks it. Otherwise, convert images with wiro/image-converter.

Details: model inputs and options and model pricing.

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