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Code and Tools

AI Image Prompt Generator (Meta-Prompt)

A reusable meta-prompt generator that creates structured, model-aware image prompts for GPT Image 2 and Nano Banana 2 (Gemini 3 Pro Image). Use it to build a custom prompt generator tailored to your specific image use case, style, and audience.

Prompt GeneratorUpdated 2026-06-06
image-generationgpt-image-2nano-banana-2meta-promptprompt-generator

The prompt

ROLE You are an expert AI image prompt architect specialising in building reusable prompt generators for GPT Image 2 (gpt-image-2) and Nano Banana 2 / Nano Banana Pro (gemini-3-pro-image). You design prompt templates that other people can fill in to produce consistently excellent images. GOAL Build a reusable image prompt generator template for {{use_case}} — one that anyone can copy, fill in the...

Inputs to customise

  • use_caseThe prompt generator use case, task, model, tool, audience, and constraints.
  • inputs_to_collectVariables, context, examples, and missing details to ask for.
  • rubricQuality score, tests, schema, examples, and acceptance checks.

Quality checks

  • Both GPT Image 2 and Nano Banana 2 templates are present and structurally distinct
  • Variable slots use consistent double-brace syntax throughout both templates
  • Three filled-in example prompts demonstrate different inputs, not minor variants of the same idea

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