Grammarly
AI writing assistant that catches grammar, tone, and clarity issues across every app you use.
What it does
Grammarly is an AI writing assistant that works across browsers, desktop apps, and integrations to correct grammar, improve clarity, adjust tone, and now generate full drafts. Its browser extension embeds into Gmail, Slack, LinkedIn, and thousands of other tools. The business tier adds style guides, brand tones, and admin controls for consistent organizational writing standards.
Why AI-ENHANCED
Grammarly started as a rules-based grammar checker and has progressively integrated machine learning and generative AI into its core writing assistance.
Best for
Small teams use Grammarly to ensure professional communication quality across all customer-facing and internal writing.
Mid-market organizations use Grammarly Business for org-wide writing consistency, with analytics on communication patterns and team usage.
Small businesses use Grammarly Business to enforce consistent tone and style guidelines across the team, particularly for customer communications.
Individuals use Grammarly as a passive safety net across every app they write in - catching errors and improving tone without interrupting workflow.
Limitations
Grammarly suggestions sometimes push writing toward a generic corporate style — heavy use without selectivity can flatten a distinctive or informal voice.
Grammar and clarity checks are valuable, but Grammarly cannot evaluate argument structure, narrative flow, or the strategic fit of content — human editors still own that layer.
Basic spelling and grammar correction is all that is available on the free plan — the AI writing and tone features require a paid subscription.
Alternatives by segment
Free tier. Premium at $12/month. Business at $15/user/month (minimum 3 users).
2026-03-01
