📝
Grammarly
by Grammarly
Grammarly is the most widely used AI writing assistant, checking grammar, spelling, punctuation, clarity, and tone across emails, documents, and web browsers. Its premium tier offers full-sentence rewrites, plagiarism detection, and a generative AI assistant that can draft text from scratch. Over 40 million people and 50,000 teams use Grammarly to write with more confidence and fewer errors.
Grammarly features and capabilities, including which plan they need and how they compare in the CanIUse matrix.
grammarlyAdded 2025-09-21Catalog rank 9
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✨ Modalities
💬
Yes, requires free plan. You write in the Grammarly editor or any connected surface; it rewrites and proofreads that text.Text Input
🖼️
No. A writing assistant, not a vision model.Image Upload / Vision
🎨
No. Does not generate images.Image Generation
🎙️
No. No conversational voice loop is documented on the plans page.Voice Mode
🎥
No. Not a video-analysis product.Video Understanding
🎬
No. Not a video generation product.Video Generation
📁
Unknown. Docs/PDF upload in the editor was not confirmed on the homepage/plans pages checked.File Upload (PDF, DOCX)
💻
No. Does not run code.Code Execution
🔊
No. No audio-file input is documented.Audio Input
🖌️
Partial. The editor is the product. It is not a Claude Artifacts side panel.Canvas / Artifact Editor
🖥️
No. No computer-use product.Screen Sharing / Computer Use
🧠 Memory & Context
🧠
Yes, requires plus plan. Style guide, brand tones, snippets, and Knowledge Share persist org/voice rules.Persistent Memory
📏
No. Not an LLM context-window product. Generative prompts are metered (100 free / 2,000 Pro).Large Context Window
⚙️
Yes, requires plus plan. Style guide and brand tones steer suggestions. Enterprise can manage features centrally.Custom Instructions
📜
Partial. Documents and suggestion history live in the product. Not a multi-thread chat log like ChatGPT.Conversation History
🔌 Integrations
🌐
No. Does not browse the live web to answer questions.Web Search / Browsing
🔌
Yes, requires free plan. Works inside other apps (homepage shows Zendesk). That is an editor overlay, plus a browser extension.Plugins / Extensions
🔧
Partial. Enterprise lists an Audit Logs API. That is not a public generate-text REST API.API Access
⚡
Unknown. No first-party Zapier app was checked.Zapier Integration
🤖
No. No Custom GPT store. Superhuman Go agents are a separate Superhuman surface.Custom GPTs / Bots
👥
Partial. Team style guides and analytics. Not a multiplayer cursor in one doc.Real-time Collaboration
🐦
No. No live social firehose.Live Social Data Integration
📚
Partial. Plans mention keeping citations consistent. That is style, not live academic search.Live Citation Mapping
👨💻 Developer
🛠️
No. Rewrite/proofread agents, not a developer tool-calling API.Function Calling
⚡
Unknown. Token streaming is not documented as an API contract.Streaming Responses
🎛️
No. Brand tones/style guides are settings, not custom-weight training.Fine-Tuning
📐
No. Not an embeddings API.Embeddings API
📋
No. Output is revised prose, not JSON schema.Structured Output (JSON)
🧩
No. Not an LLM Deep Think product. Humanizer/AI Detector are writing agents.Reasoning / Thinking Mode
🏠
No. Cloud service. Enterprise BYOK is key management, not a local model.Local Execution
🔓
No. Closed product, not an open-weight model release.Open Weights
🤖
Partial. Humanizer and AI Detector are named agents. Superhuman Go is the broader agent layer.Multi-Agent Orchestration
📱 Platforms
🌐
Yes, requires free plan. grammarly.com is the web editor and account/plans surface.Web App
📱
Unknown. A current iOS app was not confirmed on the homepage/plans pages checked.iOS App
🤖
Unknown. A current Android app was not confirmed on the homepage/plans pages checked.Android App
🖥️
Unknown. A native desktop app was not confirmed on the pages checked this round.Desktop App
🔵
Yes, requires free plan. Grammarly’s in-page assistant is distributed as a browser extension, including Chrome.Chrome Extension
🔒 Privacy
🔒
Unknown. SOC 2 Type 2 is documented. A GDPR DPA was not read.GDPR Compliant
🚫
Yes, requires free plan. Homepage: does not sell/monetize user content or allow third-party providers to train on it.Opt Out of Data Training
🏢
Yes, requires enterprise plan. SSO/SAML, SCIM, confidential mode, DLP, BYOK, audit logs. SOC 2 Type 2.Enterprise Privacy Mode
💼 Workspaces
📂
Partial. Style guide, brand tones, and snippets persist. Not a chat project workspace.Projects / Folders