Question: Can you recommend a writing tool that uses AI to identify gaps in my story and suggests content to fill them, while still allowing me to maintain my own voice?

If you want an AI-powered writing tool that helps you spot holes in your narrative and then offers suggestions for filling them while staying true to your voice, Subtxt is a good option. It offers a rich narrative foundation with tools like Narrative Agents, Subtxt Muse, Premise Builder and Storyforms that let you construct narrative architecture, flesh out premises and compare thematic structures. Subtxt is geared for screenwriters, novelists and playwrights, and it's been used on big studio projects, so you can trust you'll be able to use AI to improve your work without losing your voice. The service offers three tiers of pricing depending on how much you need.

Another option is Novelcrafter, an all-purpose novel writing tool. It offers a personal Wiki for tracking story details, several writing modes and AI tools to help you as you go. The service's Codex tool is designed to house characters, settings and other story elements, so you can better see how your narrative is developing. Novelcrafter also lets you set AI context and prompt settings, so you can fine-tune the help you get to your writing style. It offers a 14-day free trial, and several tiers of pricing depending on how much you use it.

Sudowrite is another AI-powered writing tool to help fiction authors break through writer's block and improve writing. It uses large language models like GPT-3 and GPT-4 to generate text based on your prompts, and it's got tools for idea generation, outlining, writing, editing and more. Sudowrite also has practical tools like customizable modes and project organization, so you can use it to boost your creativity and productivity without losing control of your narrative.