Grammarly alternatives

12 writing tools in the same lane as Grammarly, ranked by editorial score.

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Claude

Featured

Writing · Claude Opus / Sonnet

9.6

Anthropic's flagship assistant for long-form writing, analysis, and coding.

Freemium· Free tier; Pro $20/mo; Max $100–$200/molong-form writingsummarization

GPT-4o

Featured

Writing · GPT-4o

9.4

OpenAI's multimodal flagship behind ChatGPT.

Freemium· Free tier; Plus $20/mo; Pro $200/mogeneral writingsummarization

Gemini Advanced

Writing · Gemini 2.5 Pro

9.0

Google's flagship — strong at math, long context, and Workspace integration.

Paid· $20/mo via Google One AI PremiumWorkspace integrationmath

Sudowrite

Writing · Multi-model (OpenAI / Anthropic via API)

8.2

Fiction-writing AI with story bibles, brainstorming, and pacing tools.

Paid· $19+/mo (Hobby/Student); $29/mo Professionalfictionnovels

Notion AI

Writing · Multi-model (OpenAI / Anthropic via API)

8.0

In-line AI inside your Notion docs and databases.

Paid· $10/mo per member add-ondoc summariesin-doc Q&A

Jasper

Writing · Multi-model (OpenAI / Anthropic via API)

7.6

Marketing-team-focused AI copywriter and content workflow.

Paid· $49+/mo per seat (Creator); $69+/mo Promarketing copybrand voice

Writesonic

Writing · Multi-model (OpenAI / Anthropic via API)

7.4

All-in-one AI writer with SEO research, articles, and chat.

Freemium· Free trial; from $20/mo IndividualSEO articlescontent marketing

Copy.ai

Writing · Multi-model (OpenAI / Anthropic via API)

7.2

Templated AI copywriter for blogs, ads, and outbound emails.

Freemium· Free tier; Pro $36/mo; Team $186/moadssocial

AI Dungeon

Writing · Multi-model (rotating open-weights: Mixtral, Llama, Hermes variants)

AI-powered text adventure platform where the story is generated turn-by-turn by an LLM.

Freemium· Free tier; paid tiers roughly $10-$30/mo (Adventurer / Champion / Mythic)interactive-fictionai-roleplay

AI Poem Generator

Writing

Free single-purpose web app that turns a one-line prompt into a rhyming poem.

Free· Free, no signuprhyming-poemsgreeting-cards

AI Prompt Genius

Writing

Open-source Chrome extension that turns your browser into a searchable, taggable prompt library for any AI chatbot.

Free· Free and open-sourceprompt-managementprompt-library

AI Prompt Genius

Writing

Open-source Chrome extension for building a searchable, tagged library of reusable AI prompts.

Free· Free and open-sourceprompt-libraryprompt-templates