Sudowrite

Wordtune

Freemium

Wordtune works at sentence level. Instead of generating whole documents, it offers several rewrite options for the sentence you just wrote, along with switches for formal or casual tone and corrections for grammar, spelling and phrasing. It also continues a stalled paragraph, suggests synonyms and translates text into English across ten languages. Most people use it through the Chrome extension inside Gmail, docs or a CMS, and a web editor covers everything else. The Basic plan is free with limits; Advanced costs $6.99 per month, and a three-day trial covers the paid tiers.

QuillBot

Freemium

QuillBot is a set of editing tools gathered around a paraphraser. You paste text and get rewritten versions in more than ten modes, including academic, formal and simple, or define a custom mode for a house style. Grammar checking, an AI detector, an AI humanizer, a plagiarism checker, a summarizer and a citation generator sit in the same account, which makes it useful for students assembling essays and for editors polishing client copy. The free tier caps paraphrasing at 100 words and two modes; Premium at $8.33 per month on annual billing lifts those limits and adds full detector and humanizer access.

Rytr

Freemium

Rytr has changed shape: it now remembers clients and commitments across email, Slack, calendars and meeting notes, then helps you write the follow-up. The writing side, called Create, offers more than forty use cases such as emails, ads and posts, with 22 tones and support for 38 languages, and can produce up to three drafts at once. A browser extension rewrites text in any input box, while Engage supplies morning briefs and meeting prep. The free plan allows 10,000 characters monthly; Lite at $9 per month removes the character cap.

Writesonic

Paid

Writesonic began as a copywriting assistant but now sells itself as an AI search visibility platform that still writes. It tracks how often your brand appears in answers from ChatGPT, Gemini and Google AI Overviews, then drafts articles and runs site audits to close the gaps it finds. Plans are organized by prompt and answer volume, articles per month and seats: Starter covers 15 articles and ten audits monthly. There is no free plan, only a seven-day trial, and the entry price is $79 per month on annual billing, which puts it beyond most individual writers and aimed at agencies and in-house marketing teams.

Jasper

Paid

Jasper is built for marketing teams rather than individual writers. You load your brand voice, style guide and product details into its knowledge base once, then produce campaign copy, blog drafts, emails and social posts that follow those rules. The Canvas editor holds documents and campaigns in one workspace, while separate agents handle research, translation and checks on how your brand appears in AI answers. Collaboration and multiple brand profiles sit behind the Pro plan; larger companies get custom Business pricing with onboarding support. Only Pro is self-serve, billed at $59 per month yearly or $69 monthly, and a seven-day trial covers the Pro features.

ChatGPT

Free✦ Featured

ChatGPT is OpenAI's general-purpose AI assistant, available through the web, desktop apps and mobile. It handles everyday tasks like drafting and editing text, answering research questions, summarising documents, writing and debugging code, and brainstorming. The free tier runs on a smaller model with usage limits; paid plans unlock the latest models, higher message caps, image generation, file uploads and custom GPTs. A voice mode allows spoken conversation, and the API lets developers build ChatGPT-style features into their own products. It is the default starting point for most people new to AI, and remains a strong all-rounder for writing and coding alike.