Nano Banana Pro model invocation pitfalls: imageConfig determines resolution, do not add size parameter
Many developers calling the Nano Banana Pro API (which corresponds to the Google gemini-3-pro-image-preview model) for the first time fall into the same trap: they reuse the size: "1024×1024" parameter from the OpenAI / DALL-E era. As a result, the image resolution either refuses to change, the request returns a 400 error, or the parameter … Read more
