Pick Grammarly if
students and knowledge workers who want inline grammar in Gmail, Docs, and the browser.
Read the Grammarly pageGrammarly vs Writesonic
Our take
Pick Grammarly if students and knowledge workers who want inline grammar in Gmail, Docs, and the browser. Pick Writesonic if sEO and content teams who care how they appear in ChatGPT-class answers. Skip Grammarly if people who need a paraphraser with named modes (QuillBot) or a rewrite box that leads with “humanize” (Wordtune). Skip Writesonic if people who need a cheap paraphraser (QuillBot) or inline grammar
Grammarly
signed-out grammar checker plus a writing
Writesonic
hosted SEO + AI-search (GEO) agent
Best for
Grammarly Fix English in the page you already have open
Writesonic Brand visibility in AI answers
Free plan
Grammarly $0 · uSD / month. Mistake-free writing, tone, 100 AI prompts
Writesonic No free plan
Lowest paid
Grammarly Pro $12, monthly only
Writesonic Basic $249/mo yearly
Next step up
Grammarly
Writesonic Growth $499/mo yearly
Coding agent
Grammarly
Writesonic AI Agent chat
Runs where
Grammarly
Writesonic Hosted
Watch out
Grammarly Free is grammar + 100 prompts
Writesonic $79 is annual Starter
Last checked
Grammarly 2026-10-20 · support.grammarly.com/hc/en-us/articles
Writesonic 2026-10-20 · docs.writesonic.com/docs/different-subscription-plans-of-writesonic
Which one, then?
Pick Writesonic if
sEO and content teams who care how they appear in ChatGPT-class answers.
Read the Writesonic page