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How to batch-create several distinct poster concepts at once with GPT Image Skill

Delegate five different poster designs and generate them in one bounded parallel run.

  • Content
  • Intermediate
  • 30 minutes
  • From the README
  • Codex
  • Claude Code

Who it is forA marketing or event lead who needs several competing visual directions for one campaign by the end of the day.

The problemGenerating each concept one at a time is slow, and reusing one prompt produces near-duplicates.

The outcomeA set of distinct PNG concepts in /generated-images, each with its own job ID and filename, generated with bounded parallelism.

What you need first

  • A ChatGPT or Codex plan that permits image generation (the README says Codex image generation is not available on the Free plan)
  • Node.js 22 or newer
  • Git, for installing from GitHub
  • Codex CLI signed in with ChatGPT, or a host that provides subscription-native image_gen

Steps

  1. Describe the shared subject, brand, text, and aspect ratio once, then ask for a specific number of different poster concepts.
  2. Let the agent write one complete, meaningfully different image prompt per concept while keeping the shared constraints.
  3. Allow the batch to run. The README says default concurrency is 2 and the maximum is 4, with one ChatGPT auth check for the batch.
  4. Review each returned PATH and keep the concepts you want to refine with the revision workflow.

Prompt for your agent

Using GPT Image Skill in <repo path>, create <number> distinct poster concepts for <campaign brief> at <aspect ratio>. Expect one PNG per concept in /generated-images, each with its own filename. Verify that the prompts differ in composition and not only in wording.

Caveat. Batch runs still consume included ChatGPT or Codex usage and remain subject to plan and workspace limits.

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