PornPen AI is an adult-only AI image generation platform that has operated since 2022. Rather than free-text prompts, it uses a tag-based interface where users build explicit images by selecting from predefined categories such as body type, pose, setting and clothing, lowering the barrier to entry. The platform offers a free tier plus a Pro Mode around $15/month that adds SDXL-quality generation, GIF and short-video creation, 3D posing, doodle-to-image, inpainting, character consistency, upscaling and access to a large image library. PornPen also includes an NSFW chat feature for text conversation with AI characters. It is strictly an adult product requiring users to be 18+, and is positioned as one of the more accessible, low-friction NSFW generators still operating. It is included here for the adult AI-image segment adjacent to companion apps.