Novelists get the most from AI as a brainstorming partner and a tireless second reader, not as the author. The tools below cover ideas, line edits, manuscript-level reports and proofreading by ear.
Claude is the best fit for nuanced prose and feedback on long chapters: free to try, $20/mo for Pro. Run finished chapters through ProWritingAid for pacing and overused-word reports, and listen to your draft in Speechify to catch what your eyes skip.
| App | Free tier | Paid from | Top plan | Best for |
|---|---|---|---|---|
| Claude | Yes | $20/mo | $100–200/mo | Document analysis, research papers, nuanced writing, software engineering |
| ChatGPT | Yes | $8/mo | $500/mo | Everyday writing, brainstorming, image generation, casual coding |
| ProWritingAid | Yes | $30/mo | $36/mo | Novelists, academics, and bloggers who want in-depth style reports (pacing, overused words, readability) on full manuscripts |
| Wordtune | Yes | $6.99/mo | $9.99/mo | Writers who want fast, contextual sentence rewrites and tone shifts on text they've already drafted |
| NotebookLM (Gemini Notebook) | Yes | $4.99/mo | $99.99–199.99/mo | Students, researchers, and analysts who need grounded answers and audio summaries from their own documents |
| Speechify | Yes | $29/mo | $29/mo | Readers, students, and professionals who want articles, books, and documents read aloud in natural voices |
Monthly prices in US dollars before tax, from each vendor's official pricing (US list price; weekly-billed plans converted to a monthly figure). Updated November 2, 2026
Built for nuanced writing and long documents, so it can take in whole chapters and give detailed feedback. Pro adds unlimited projects to keep each book's chats and documents together.
Pick it if: you want a thoughtful reader for drafts and revision ideas.
Where it falls short: Free has limited daily usage, and caps are smaller than ChatGPT's.
Full Claude pricing →Unlimited text chats, even on Free, make it easy to throw dozens of plot, name and premise ideas around; Go and above add memory and projects.
Pick it if: you want lots of options fast when you're stuck.
Where it falls short: Output quality varies between tiers: Free runs GPT-6 Luna, while Plus defaults to GPT-6.1 Sol.
Full ChatGPT pricing →Originally built to help authors polish manuscripts: Premium runs 20+ reports on pacing, overused words and readability, with Word, Google Docs and Scrivener integrations.
Pick it if: you're revising a full draft and want manuscript-level feedback.
Where it falls short: Free checks only 500 words at a time, and the number of reports can overwhelm.
Full ProWritingAid pricing →Suggests rephrasings, tone shifts and restructured sentences for text you've already written, without drafting new material. Unlimited ($9.99/mo) removes the caps on rewrites.
Pick it if: a sentence is almost right and you want alternatives.
Where it falls short: Free and Advanced have tight daily rewrite caps.
Full Wordtune pricing →Upload your outline, character notes and earlier books, and it answers only from those sources, which helps with continuity questions. Free allows 100 notebooks with 50 sources each.
Pick it if: you write a series and lose track of your own details.
Where it falls short: Higher limits require a full Google AI Plus, Pro or Ultra subscription.
Full NotebookLM (Gemini Notebook) pricing →Reads documents and books aloud in natural voices; Premium has 1,000+ natural voices in 60+ languages and up to 5x speed.
Pick it if: you catch more mistakes hearing a chapter than reading it.
Where it falls short: Free is limited to 10 robotic voices at up to 1.5x speed, and Premium is a big jump with no middle tier.
Full Speechify pricing →Use chat assistants for questions and options: what if this scene ran from the villain's side, or five names for a harbor town. Write the sentences yourself, and save the paid tools for revision, where ProWritingAid's manuscript reports and a read-aloud pass find problems that are hard to see in your own prose.
ProWritingAid: it was built to help authors polish manuscripts, with 20+ style reports and a Scrivener integration on Premium. Claude complements it with big-picture feedback on chapters.
Claude for nuanced prose and feedback on long chapters; ChatGPT for fast brainstorming, with unlimited text chats on its free tier.
How we choose: prices come from each vendor's official pricing page and are re-checked every week. We take no affiliate fees, so rankings aren't for sale.