Lastslate vs Saga

Lastslate is a screenplay editor for macOS and Windows with an AI collaborator that reads scripts but does not write dialogue. As a writer types, the editor identifies elements such as sluglines, character cues and dialogue, and saves automatically. It supports Final Draft FDX, Fountain, plain text and PDF, and can turn PDF screenplays into editable scenes. The Beat Board links story beats to script scenes and is included on every plan; Pro adds reference images to beats. Built-in tools derive cast lists, location and prop breakdowns, loglines and one-sheets from a script. Browser review links let recipients comment on script lines without an account, while Pro allows up to 10 writers to co-write one script live. Scripts are stored locally by default, and optional cloud backup is encrypted in transit and at rest. AI actions send the relevant excerpt, prompt and session context to the AI provider for that request. The free plan includes the full editor, Beat Board, PDF and FDX export, 10 cloud projects and limited AI collaboration. Pro costs $15 a month; Pro+ costs $45 a month.

Saga is a web platform for developing stories and turning ideas into videos. Its workflow spans plotting, character development, scriptwriting, storyboarding, and publishing. Writers can arrange ideas in mind maps and outlines, explore suggestions for themes, subplots, and characters, then organize scenes, shot types, and locations in a drag-and-drop storyboard. For screen stories, Saga offers customizable templates with 40 beats for films and 25 for TV. The maker lists OpenAI GPT-4o, Google Imagen 4 and Veo, Black Forest Labs FLUX, and Luma among the models powering storyboards and AI previz animations. Users can upload.txt,.fdx, or.fountain scripts; projects export as PDF and scripts as.txt or.fountain. The FAQ says users own their created content and Saga does not use it to retrain AI models. The free plan includes plot development, character archetypes, and act structure. Premium is $19.99 a month and includes full scriptwriting, an AI chatbot, storyboarding, video generation, and 40 Saga credits per month.