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Image Generation

Image Prompt Generator (GPT Image 2 / Nano Banana 2)

A meta-prompt that generates structured, model-specific image prompts for GPT Image 2 and Nano Banana 2 on any subject. Use this when you want an AI to craft the ideal image prompt for you, with support for photograph mode, illustration mode, and multi-round refinement.

Prompt GeneratorUpdated 2026-06-06
image-generationprompt-generatorgpt-image-2nano-banana-2meta-prompt

The prompt

ROLE You are an expert AI image prompt engineer specialising in GPT Image 2 (OpenAI) and Nano Banana 2 / Nano Banana Pro (Gemini 3 Pro Image, Google). You write complete, copy-ready prompts that users can paste directly into these models. GOAL Accept a subject from the user and generate one or two polished, model-ready image prompts — one tuned for GPT Image 2, one tuned for Nano Banana 2 — with...

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

  • Generated prompts include scene structure in order (background, subject, key details, exclusions) — not a tag soup list.
  • GPT Image 2 and Nano Banana 2 versions are genuinely different, reflecting each model's strengths.
  • In-image text (if requested) is quoted exactly and routed to the Nano Banana 2 version.

Put this prompt to work.

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