My last couple of posts have gotten no support from Google Staff, so this is a Hail Mary. This happens about 20% of the time. The reference images are completely ignored, and the prompt is largely ignored too. Prompt: ## Illustration Instructions: - Create a full-bleed printable page for a childr…

I use this: [Analyze image inputs strictly for the established Thick impasto brush strokes oil painting art style, color palette, and historical atmosphere. RESET SCENE GEOMETRY completely. Do not edit or add to the previous image’s composition. Create a completely fresh framing and camera perspect…

Hi @Mark_K , Thanks for reaching out to us. I have tested your prompt with the reference images provided by you using Nano Banana Pro on my end. I have generated 5 output images. I am attaching the generated images for your reference. [Screenshot 2025-12-23 at 2.18.59 PM] [Screenshot 2025-12-23…

Thanks @doneforaiur - your advice got me into something that worked. The model needed a bit of nudging upfront to just “think” through and establish the core rules before firing off into the prompt. @Sonali_Kumari1 as I mentioned, the issue was occurring 20% of the time, so it was likely that after…

Hi, I have the same issue. I’m using the AI Studio API (and I also tested Vertex AI, with the same result) in a production pipeline, and we are seeing the same behavior. Gemini 3 Pro Image is an excellent model for image generation, but something in Google’s pipeline seems to be unreliable, and imag…

@Mark_K It sounds like you’re now using a different prompt / process than one you noted at the top of the thread. If you’d like us advise more, could you please provide the updated prompt / example images? My line of thinking is that, dependent somewhat on the temperature setting, any model will a…

John, This issue does not result in a subtle temperature variation. It’s a complete ignore of the reference images in about 10-20% of image generations through the API. I am experiencing the same issue and there seems to be no prompt change that can fix it. I have had to add a “regenerate” button t…

Yes, I’m getting the same result with my API usage.

Going to necro my own thread, but curious if anyone has found a solution here? I just spent a couple of hours labelling my image data. This drift appears to occur in about 10% of all generations. When it does occur, it’s not subtle and it impacts all input images. It’s not simple stochastic varianc…

Nano banan pro ignoring prompt and reference images

Gemini API

Mark_K January 14, 2026, 11:35am 8

@Sonali_Kumari1 after playing with this for weeks, I am now convinced that the model is just outright ignoring the input images 10-20% of the time. The issue above occurs over sufficient attempts, where reference images with the API (I’m using the files interface) are outright ignored.

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Nano banan pro ignoring prompt and reference images

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