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Head-to-head

Grammarly vs Postus

Two leading ai writing & content tools, compared on pricing, features, and editorial fit. Updated for 2026.

Grammarly logo
Grammarly

AI writing assistance everywhere you write.

AIFree
Visit Grammarly
Postus logo
Postus

AI-generated social media posts with text and images, scheduled automatically

AIPrice not listed
Visit Postus

At a glance

 GrammarlyPostus
TaglineAI writing assistance everywhere you write.AI-generated social media posts with text and images, scheduled automatically
Pricing modelFreemiumPaid
Starts atFreeNot listed
Founded2009—
AI-native
CategoriesAI Writing & ContentSocial Media, AI Writing & Content
Vendor claimed

Quick take

Pick Grammarly if you need ai writing assistance everywhere you write. Pick Postus if you need ai-generated social media posts with text and images, scheduled automatically.

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Frequently asked

Is Grammarly better than Postus?
It depends on your use case. Grammarly is ai writing assistance everywhere you write, while Postus is ai-generated social media posts with text and images, scheduled automatically. See the comparison above for which fits your team.
What's the price difference between Grammarly and Postus?
Grammarly is free. Postus doesn't publish its pricing.
Can I migrate from Grammarly to Postus?
Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.