Lucid Book vs NovelAI

Lucid Book is a browser-based AI story-play platform built around playable books. You can prepare a story in advance or begin with one character and add others as the story develops. During play, controls let you alter weather, time, genre, mood, and locations. Character profiles can define roles, personalities, behavior, interests, and relationships, and you can build worlds with detailed locations and connect characters to places through roles. The site says its AI uses book-scale context to retain story details and keep characters and events consistent. Books can be shared by link or published in a community library, and editing can be locked. Stories can be played in any language. Lucid Book adapts to PC, tablet, and mobile screens, and can be installed as a Progressive Web App. It is labeled beta and currently free; the FAQ says users can start by making a first playable book. The Privacy & Cookies Policy page says the policy document could not be loaded, leaving the available privacy information limited.

NovelAI combines AI-assisted story writing with anime image generation and is available on the web, Android, and iOS. Its NovelAI Diffusion V5 generator can produce original characters, scenes, artwork, and full comic pages. Image controls include natural-language prompts, tags, character positioning, and action tags; separately defined characters can remain consistent across scenes. Inpainting, Director Tools, and a built-in canvas support image refinement. The homepage identifies GLM 4.6 as the model behind story generation, and the product supports long-form writing. The Paper trial includes 30 image generations, 50 text generations, and 100 text-to-speech generations. Paid plans start at $10 a month: Tablet and Scroll each include 1,000 subscription ImageAnlas, while Opus costs $25 a month and includes 10,000 subscription ImageAnlas and a 28,672-token context size. Anlas can also be purchased on demand for image generation. NovelAI says users retain ownership of created content and encrypts stories, lorebooks, scripts, and prompt chunks in the browser before saving.