Grammarly vs Grok

These two do quite different things, so neither is a direct alternative to the other.

Grammarly Superhuman (formerly Grammarly)

Grammar, tone and rewriting suggestions wherever you type, in the browser and desktop apps.

xAI’s assistant with live access to posts on X, plus image generation.

Side by side

Property	Grammarly	Grok
Type	Product	Product
Category	AI writing and productivity	AI assistants
Made by	Superhuman (formerly Grammarly)	xAI
Pricing	Free plan + paid	Free plan + paid
Open source	No	No
API	No	Yes
Platforms	Web, Desktop, Mobile	Web, Mobile
Startup	Yes	Yes