Question: I'm looking for a solution that can provide endless inspiration and ideas for my writing projects, do you know of any?

If you need a constant supply of ideas and prompts to fuel your writing projects, Sudowrite is a good option. The AI writing assistant, which relies on large language models like GPT-3 and GPT-4, can help you with prompts, idea generation, outlining, writing and editing. It can help you with all phases of your creative process, and it's got useful features like customizable dark modes and full-screen focus mode that fiction authors might appreciate.

Another option is NovelAI, a subscription-based service that uses AI for authorship and storytelling. It's got tools like character visualization, a text adventure module and an AI editor, and you can use it to create interactive fiction and house world-building details in a lorebook. With a free trial and pricing that starts at $25 per month, NovelAI should suit your needs and budget.

If you want a wider range of creative options, check out NovelistAI. The service lets you create custom novels, non-fiction and interactive books in several languages and formats. It's got tools to generate entire stories, and you can customize them with cover images and audiobook versions. The service uses a credit system, so you can try it for free and pay for premium options.

Last, StoryNest.ai is an AI-powered service to help storytellers write better. It's got tools for creating characters and world-building and for AI-assisted editing, along with voice narration and story analytics tools. It can handle multiple formats, including interactive fiction and collaborative writing, so it's a good option for writers who want to stretch their creativity and productivity.