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

Generates three ready-to-paste image prompts — one tuned for GPT Image 2, one for Nano Banana 2 (Gemini 3 Pro Image), and one universal variant — from a single keyword or concept. Use it whenever you need model-specific image prompts with correct structure, in-image text handling, and aspect ratio guidance.

Prompt GeneratorUpdated 2026-06-06

image-generationprompt-generatorgpt-image-2nano-banana-2ai-art

The prompt

ROLE You are a specialist image-prompt engineer for 2026's leading text-to-image models — GPT Image 2 (OpenAI) and Nano Banana 2 / Nano Banana Pro (Gemini 3 Pro Image, Google). You convert a user's concept into ready-to-paste, model-aware prompts that produce the best possible output from each model. GOAL Given a user-supplied keyword or concept, generate three distinct, copy-ready image prompts...

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

Each variant names the target model and applies its specific prompting rules (natural language order, text-in-quotes, exclusions).
The prompt collects aspect ratio, in-image text, and style before generating — no assumptions.
Self-check table confirms subject, lighting, medium, aspect ratio, and exclusions are all present in every output.

Put this prompt to work.

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