Grammarly and Sudowrite are AI writing tools for people who write regularly. Grammarly reviews text inside the apps where writing already happens, while Sudowrite helps authors draft fiction in its own editor. Professionals, students and teams suit Grammarly. Novelists and screenwriters working alone suit Sudowrite.
Pricing: Free plan for individuals; Pro $12 per member; Enterprise on request.
Grammarly is an AI writing assistant for grammar, tone and rewrites in the browser, Word and Gmail, from Superhuman, the company formerly called Grammarly.
by Sudowrite
Pricing: Hobby & Student $19/mo monthly or $10/mo billed annually; Professional $29 or $22; Max $59 or $44; trial on every plan, no card.
Sudowrite is an AI writing app for fiction: drafting, rewriting and feedback tools for novelists and screenwriters, sold on credit-based plans.
AI Writing Assistants features side-by-side
Hobby & Student $19/mo monthly or $10/mo billed annually; Professional $29 or $22; Max $59 or $44; trial on every plan, no card.
Choose Grammarly if you spend your day writing messages and reports and want fixes appearing in the apps you already use. Choose Sudowrite if you are an author drafting a novel or screenplay on your own. Grammarly has a free plan, paid monthly plans and higher plans sold by quote, while Sudowrite is sold on paid monthly plans.
A team that needs every writer to sound like one company is the buyer Grammarly is built for. It loads house rules and flags copy that breaks them. Students also get a plagiarism check against published sources. An extension and add-ins bring Grammarly into the word processors people already use. The drawback users report is an app or extension that stops responding or freezes documents.
An author stuck halfway through a long draft is who Sudowrite is built for. It adds sensory detail to a setting or a character and brainstorms names and plot turns to choose from. Characters and worldbuilding notes sit in one project for a series. Sudowrite is limited in scope, because it stands alone instead of plugging into a word processor. It is made for one author, with no shared seats or team style rules.
Grammarly's users praise its grammar and spelling catches, which save editing time, and its real-time help inside the apps where they already write. Its reviewers complain about renewal charges higher than expected, hard cancellation and constant prompts to upgrade. Sudowrite's reviewers like the fiction tools that help them draft and keep a story organised, and a quick, helpful support team. They complain that the prose is bland and needs heavy editing, that credits run out quickly and that billing and cancellation go wrong.
Grammarly describes a data intelligence platform that applies it to editorial and communication quality control across marketing, customer support and sales teams. That customer cut its editing time in half. A novelist who stalls on a scene needs a way to keep moving without leaving the text. Sudowrite writes the next passage in a voice matched to the author.
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