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GrammarlyCreate & Publish Content

STOA rating

6.6 / 10

Openness

OPENNESS 5/10API 1/3 · Export 3/3 · Contract 1/2 · Integrations 0/2

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Grammarly's developer APIs are only available to Grammarly Enterprise and Grammarly for Education admins. developer.grammarly.com, checked 7 Oct 2026 (opens in a new tab)

Your data

You can self-serve download a Grammarly document from the editor, in the same file format you uploaded. support.grammarly.com, checked 7 Oct 2026 (opens in a new tab)

Contract

Grammarly subscriptions renew automatically; cancelling stops renewal and keeps paid features until the current period ends. support.grammarly.com, checked 7 Oct 2026 (opens in a new tab)

Openness note

API for Enterprise and Education admins. Self-serve document download. Auto-renewing plans with published cancellation terms.

What it does

Grammarly checks and corrects grammar, spelling, tone, and clarity in real time for anyone who writes professionally across email, documents, or web platforms.

Strengths

Works inside Gmail, Google Docs, Slack, and most web browsers with no extra setup
Free plan catches basic grammar and spelling errors for everyday use
Tone detection helps you sound professional in client-facing messages
AI writing suggestions speed up drafting emails and proposals
Easy enough for non-writers to use immediately

Weaknesses

Advanced AI features and style suggestions are locked behind the paid plan
Team plans get expensive quickly — Business plan runs around $15 per user per month
Suggestions can sometimes change your intended meaning if you accept them without reading carefully
Not a full content creation tool — works best as an editing assistant, not a writer

Key features

Checks grammar, spelling, and punctuation in real time as you type
Suggests clearer, more concise ways to phrase sentences
Detects tone so you can adjust how your message sounds to the reader
Generates draft text, replies, and summaries using AI prompts
Works across email, documents, social media, and most web-based writing tools
Offers a plagiarism checker on paid plans for content creators

AI features

Grammarly uses AI to suggest rewrites, adjust your writing tone, generate text from prompts, and flag clarity issues in real time. Its GrammarlyGO feature can draft emails, summarize text, and give feedback on how your message might land with readers.

STOA verdict

Grammarly is a great fit for any small business owner who writes emails, proposals, or marketing content and wants to look more professional without hiring an editor. The AI writing assistant catches grammar mistakes, improves tone, and helps you write more efficiently — but the best features require the paid plan at $12-15 per month per person, which can add up if your whole team needs it.