The 10 Best AI Tools for Writing Fiction in 2027

Sudowrite is built for fiction: Write, Rewrite, Describe and Expand, plus Muse and Ballad, its own AI models just for fiction. Hobby & Student is $10 a month paid annually or $19 monthly; Professional is $22 or $29; Max is $44 or $59. Feedback with developmental edits, line edits and beta reads is on Professional and Max.

Novelcrafter is a planning-first novel app: Scribe is $4, Hobbyist $8, Artisan $14 and Specialist $20 a month. AI works through your own key from Hobbyist up, with scene summarization, character extraction and Generate from Scene Beats; Workshop Chat arrives on Artisan. A 21-day free trial needs no credit card.

NovelAI is $10 (Tablet), $15 (Scroll) or $25 (Opus) a month with unlimited text generations on every paid plan. Memory grows from about 32,768 characters to 114,688, and its lorebook entries are referenced when their activation keys show up in the story.

Squibler turns a premise into a structured draft from a prompt box with genre choices. Free is $0 with 1,000 AI credits a month; Plus is $29.99 a month ($15.83 billed annually) with 10,000 credits and can generate a full 200-300 page book; Pro is $89.99 ($49.17 billed annually) with unlimited credits.

Inkfluence AI writes books chapter by chapter. Free is $0; Creator is $9.99 a month ($89 billed yearly) with 35 chapters a month and 15 AI assists a day; Premium is $19.99 ($179 yearly) with unlimited chapters and 100 AI assists a day. Exports are PDF, EPUB and DOCX.

ProWritingAid gives fiction writers Story Canvas, Outline Crafter and Chapter Critique, plus 25+ writing analysis reports and a comparison to 90 fiction authors. Premium is $30 a month or $10 billed yearly ($120); Premium Pro is $36 or $12 billed yearly ($144).

Fictionary’s StoryTeller gives immediate AI-powered story feedback on structure, tension and arc. It is $19 a month or $14 billed annually ($168); Premium is $39 or $29 billed annually ($348) with support for 10 manuscripts and track changes. Both have a 7-day free trial.

AutoCrit has a Free plan and a paid Pro plan; its Pro price could not be confirmed from autocrit.com, so check the site. Story Analyzer+ reviews character arcs, conflict and plot threads, and 20+ ready-made reader avatars give alpha and beta feedback, alongside 25+ editing tools.

Marlowe by Authors A.I. is analytical AI: it reads a manuscript of at least 20,000 words and compares it with bestsellers in its genre, but does not write or rewrite a word. A single Marlowe Pro report is $29.95, the Pro plus Market Fit bundle $39.90, and the subscription is $19.95 a month for 4 credits.

AI Dungeon is a text adventure where you direct the story and the AI responds. It is free to play online; paid plans are Journey $14.99, Legend $29.99, Mythic $49.99 and Ultimate $99.99 a month, with context growing from 4k tokens on Free to 64k on Ultimate.