Which AI to pick
for the job in front of you

QuillBot

Paraphrasing and proofing someone else’s paragraph

$4.17per month

The cheapest paid access among the writing tools — four dollars a month billed annually, with a free tier that adds no watermark

• Paraphrasing in several modes
• AI-text and plagiarism checks
• Free: up to 125 words at a time

Notion

Writing next to the database where the work already lives

$10per seat / month

Answers from your own document base rather than the web, so you can ask about your own brief from last year

• Search and answers across your own docs
• Writing happens where the project lives
• Connects to Slack, Jira and email

NovelAI

Prose and anime imagery in one subscription

$10per month

The only entry here that keeps text and image generation in one subscription without imposing outside moderation on the story

• Prose without outside story moderation
• Anime-style image generation
• Its own model rather than someone’s API

Sudowrite

A tool for a novel, not for a post

$10per month

Holds plot and characters across a whole book, remembering who is who at the hundred-thousandth word

• A map of characters and plot lines
• Works across a hundred thousand words
• Credit rollover on the Max plan

Jasper

Marketing copy that holds a brand voice

$59per month

Trains on your own text archive and holds the brand voice across a whole campaign — not one good paragraph but two hundred consistent ones

• Brand voice trained on your own writing
• Whole campaigns rather than single pieces
• Your data stays out of model training

JustDone

AI detection, and rewriting to get past it

—on request

Works both sides of the same job: it checks text for machine origin and rewrites it against that check

• AI-text detector plus rewriting against it
• Proofing and plagiarism checks
• Browser-based