If you want an AI-powered screenwriting assistant to help you flesh out your ideas into a finished script, Plotdot is a good choice. It's got a broad range of tools to help you from idea generation to a final script, including premise definition, character creation, plot outline and act design. Different pricing levels let you keep permanent, worldwide commercial rights to your projects, and a native app is coming soon.
Another good option is AIScreenwriter, which is designed to be useful to both new and experienced writers. It can help you brainstorm, structure your screenplay and create story outlines and character sheets. With real-time editing and multilingual support, it offers a human-like response and support system. It's got a free trial, and you can pay by the month or year with different levels of usage.
If you want more control over the narrative structure and consistency, check out Subtxt. This AI-powered tool is designed to help writers spot and fill gaps in their stories, with tools like Narrative Agents, Subtxt Muse and Premise Builder. It's good for writers of all genres and is used by big studios. Subtxt's pricing levels range from basic to pro, with more advanced tools to help you polish your scripts.
SAGA is another general-purpose tool that can help you develop storylines and characters. It's got personalized prompts, a 40-beat template for feature films, and dynamic pre-visualization tools for storyboards. Saga's generative AI can help you get past writer's block and make the entire filmmaking process easier, letting you get a script done and plan scenes.