Grammarly vs Writesonic

Grammarly (AI writing partner for grammar, clarity, tone and rewrites.) and Writesonic (AI search visibility and SEO platform with AI article creation and site audits.) compared side by side: plans and prices, vendor-stated features, platforms and sign-in, with the date each fact was checked. Matches based on official product information.

Based on official vendor pages, linked below
Grammarly pricing checked: 2026-10-27
Writesonic pricing checked: 2026-10-31

At a glance

Grammarly

Grammarly, Inc.

AI writing tools

What it does: AI writing partner for grammar, clarity, tone and rewrites.
Strong at: Strong fit for ongoing writing correction with a monthly AI-generation prompt allowance.
Free plan: Yes - ongoing free plan
Paid plans from: US$12 / month

Pricing checked 2026-10-27 · Full Grammarly record · Official site

Writesonic

AI writing tools

What it does: AI search visibility and SEO platform with AI article creation and site audits.
Strong at: Strong fit for SEO-oriented marketing content and AI search visibility tracking.
Free plan: No free plan
Paid plans from: US$99 / month

Pricing checked 2026-10-31 · Full Writesonic record · Official site

Plans & pricing

Grammarly plans & pricing

Checked 2026-10-27. · Vendor pricing page Confirm prices and terms with the vendor before buying.

Free

$0 / month

Pro

$12 USD

Enterprise

demo/custom

Writesonic plans & pricing

Checked 2026-10-31. · Vendor pricing page Confirm prices and terms with the vendor before buying.

Starter

$79 per month, billed annually

Basic

$199 per month, billed annually

Growth

$399 per month, billed annually

Enterprise

Custom

Side-by-side facts

	Grammarly	Writesonic
Free plan	Yes - ongoing free plan	No free plan
Paid plans from	US$12 / month	US$99 / month
Platforms	Web editor; Windows and Mac apps; iOS and Android; browser extensions.	Web dashboard. Native app support was not established.
Sign-in	Some public writing checks can be tried first. Sign in for the Grammarly Editor and account features.	Yes, an account is used for the Writesonic dashboard.
API	Yes. REST APIs cover writing evaluation, detection, analytics and administration; not every app feature is an API.	Yes. The current public API covers GEO visibility data and workflows; do not assume every writing feature is exposed.

What each tool says it does

Grammarly - vendor-stated features

Proofreading
Rewrites
Tone

Writesonic - vendor-stated features

AI search visibility
AI content
Site audits
Page rewriting

Worth knowing before you choose

Grammarly - worth knowing

The Free plan includes 100 AI prompts/month. “Try Pro for $0” is a separate trial.

Writesonic - worth knowing

Homepage (2026-10-27): '7-day free trial, No credit card'.
2026-10-27 : current plans are GEO/brand-tracking (Starter $99, Basic $249, Growth $499 monthly) - a different product shape from a generic consumer AI writer.
Current prices describe GEO and brand tracking.
USD 79/month is an annual-billed equivalent, not a month-to-month price.
FAQ says 12 months upfront.
Help docs disagree materially: Basic 100 articles/40 audits/2 projects versus current pricing 25/20/1; Growth 200 articles/60 audits/5 users versus 50/50/3.

Common questions

Is Grammarly or Writesonic free to use?

Grammarly: Yes - ongoing free plan (checked 2026-10-27). Writesonic: No free plan (checked 2026-10-31).

What do Grammarly and Writesonic cost?

Grammarly's entry paid plan is US$12 / month and Writesonic's is US$99 / month, from each vendor's pricing page (2026-10-27 and 2026-10-31 respectively). The tables above list every plan each vendor published.

Which is better, Grammarly or Writesonic?

It depends on the job. Grammarly: Strong fit for ongoing writing correction with a monthly AI-generation prompt allowance. Writesonic: Strong fit for SEO-oriented marketing content and AI search visibility tracking. The feature and pricing tables above show where they differ.

Where do these facts come from?

Every fact on this page is read from the vendors' own product and pricing pages, with the checked date shown beside it. Links to both official pages are at the top of each column.

Keep comparing

This comparison is not a recommendation: it sets out what each vendor states on its own pages, with the dates those pages were checked. Prices and features change - confirm with the vendor before buying.