OP is using the image generation feature of NovelAI which is primarily a service in which you create stories with an AI. You have to subscribe to at least the $10 a month tier and may have to pay extra on top of that if you want to generate a lot of images.
NovelAI - The AI Storyteller
GPT-powered AI Storyteller. Driven by AI, construct unique stories, thrilling tales, seductive romances, or just fool around. Anything goes!novelai.netReddit - Dive into anything
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Thanks, Much appreciated