If you want a tool to write a nonfiction book fast, Inkflow could be a good choice. The AI-powered book creation tool can generate content automatically and let you customize outlines, all while working with multiple languages. It's built on AWS for high-performance content generation and secure storage, and it's geared for individuals, media production teams and marketing agencies. Inkflow starts at $99 per year for more than 20,000 words of content, so it can save you time and deliver high quality.
If you're looking for a more general-purpose AI writing assistant, you might like HyperWrite. It offers a variety of tools, including Flexible AutoWrite, Summarizer and Rewrite Content, to suit different needs. HyperWrite can provide real-time research help and learn your writing style to help you write faster. Pricing is flexible, so you can easily incorporate it into your existing workflow to improve writing quality and explore new ideas.
Last, NovelistAI is a broad AI-generated content tool for creating custom novels, non-fiction books and interactive stories in more than 30 languages. It can handle a variety of formats, including gamebooks and audiobooks, and lets you create your own book covers. It uses a credit-based pricing system and offers a free plan, so it's a good option for authors who want to try it out or who want to keep costs down.