Pro
$12/mo
Limits 2,000 AI prompts per member per month; unlimited personalized suggestions.Source: grammarly.com (opens in new tab) · checked 2026-10-16
Uncertain: $12 may be the annual-billing monthly rate; page has billing toggle.
Grammarly vs QuillBot: pricing and usage limits (Oct 2026)
Grammarly is the cheaper way in: Pro costs $12/mo against $19.95/mo for QuillBot Premium, $7.95/mo or $95.40 a year less. Both have a free plan.
The short answer
Verdict from the data
- Cheaper to start
- Grammarly. Grammarly Pro is $12/mo; the cheapest QuillBot plan, QuillBot Premium, is $19.95/mo ($7.95 more).
- Free plan
- Both have one. What each includes is quoted under Free plans below.
- Top of the ladder
- Grammarly Pro at $12/mo vs QuillBot Premium at $19.95/mo.
- Paying yearly
- QuillBot takes up to 58% off (Premium); Grammarly shows no yearly discount on the plans we track.
- Latest move
- QuillBot, 27 Oct 2026: QuillBot Premium price corrected to $19.95 (we had listed $23.95).
Short verdict: pick Grammarly if you want the cheaper paid start: Pro at $12/mo against $19.95/mo for QuillBot Premium; pick QuillBot if you expect to outgrow the mid tiers: its ladder goes up to Premium at $19.95/mo, while Grammarly stops at $12/mo.
Grammarly vs QuillBot: the price gap at each tier
| Tier | Grammarly | QuillBot | Gap |
|---|---|---|---|
| Entry | Pro · $12/mo Allowance: monthly | Premium · $19.95/mo $8.33/mo billed yearly Allowance: monthly | Grammarly $7.95/mo cheaper ($95.40 a year, 40% less) Billed yearly: QuillBot $3.67/mo less |
At the entry tier, Grammarly Pro ($12/mo) undercuts QuillBot Premium ($19.95/mo) by $7.95 a month, 40%. Running both entry plans side by side, Grammarly Pro plus QuillBot Premium, comes to $31.95/mo.
Grammarly lists 1 individual paid plan and QuillBot lists 1; tiers follow the shorter ladder, matched by rank; team plans left out. Month-to-month prices.
Who should pick Grammarly, who should pick QuillBot
Head to head
| Fact | Grammarly | QuillBot |
|---|---|---|
| Free plan | Free tier | Free tier |
| Cheapest plan | Pro · $12/mo | Premium · $19.95/mo |
| Top plan | Pro · $12/mo | Premium · $19.95/mo |
| Plans tracked | 2 | 1 |
| Yearly discount | None shown | up to 58% |
| Allowance periods | Monthly | Monthly |
| Latest change | None logged | correction |
| Last checked |
$19.95/moQuillBot Premium · cheapest plan
Try QuillBot (opens in new tab)Official site · quillbot.comClosest price match: Grammarly Pro vs QuillBot Premium
Premium
$19.95/mo
Billed yearly: $8.33/mo
Limits Full access to the humanizer and AI Detector; plagiarism checks 25,000 words/month.Source: quillbot.com (opens in new tab) · checked 2026-10-27
Every plan side by side
| Tool | Plan | Price | Limits as stated & source |
|---|---|---|---|
| Grammarly | Pro | $12/mo | 2,000 AI prompts per member per month; unlimited personalized suggestions. uncertain Source: grammarly.com (opens in new tab) · checked 2026-10-16 |
| Grammarly | Enterprise | Contact sales | Unlimited prompts per member per month. Source: grammarly.com (opens in new tab) · checked 2026-10-16 |
| QuillBot | Premium | $19.95/mo | Full access to the humanizer and AI Detector; plagiarism checks 25,000 words/month. Source: quillbot.com (opens in new tab) · checked 2026-10-27 |
Free plans
| Tool | Free? | What you get for $0 & source |
|---|---|---|
| Grammarly | Free tier | Free: 100 AI prompts per month for text generation. Source: grammarly.com (opens in new tab) · checked 2026-10-16 |
| QuillBot | Free tier | Free: paraphrase up to 100 words; humanize up to 100 words (limited usage); limited AI Detector. Source: quillbot.com (opens in new tab) · checked 2026-10-27 |
Recent price and limit changes
-
correctionCorrectionQuillBot Premium price corrected to $19.95 (we had listed $23.95)
Our data listed QuillBot Premium at $23.95 a month. QuillBot's Premium page reads '$19.95 USD Per month' in our saved copies from 2026-10-22, 2026-10-23 and 2026-10-27, so we corrected the figure. This fixes our own error; QuillBot did not change its price. The $8.33 billed-annually figure was already correct.
Questions people ask
Which is cheaper, Grammarly or QuillBot?
Grammarly is cheaper to start: Grammarly Pro costs $12/mo, against $19.95/mo for QuillBot Premium. At the top end, Grammarly Pro is $12/mo and QuillBot Premium is $19.95/mo.
Is Grammarly or QuillBot free?
Both have a free plan. Grammarly has a free plan and QuillBot has a free plan; after that the cheapest paid plans are Grammarly Pro at $12/mo and QuillBot Premium at $19.95/mo. What each free plan includes, word for word from the vendor, is in the Free plans table above.
How do Grammarly Pro and QuillBot Premium compare?
They are the closest in price: $12/mo against $19.95/mo (Grammarly $7.95/mo cheaper ($95.40 a year, 40% less)). Grammarly states a monthly allowance on that plan; QuillBot states a monthly allowance.
Is it cheaper to pay yearly?
Grammarly: no yearly discount on the plans we track. QuillBot: up to 58% off when billed yearly (Premium: $8.33/mo instead of $19.95).
When did Grammarly and QuillBot last change their pricing?
Grammarly: none logged since we started tracking. QuillBot: 1 change logged, the latest on 27 Oct 2026. The entries are listed under Recent price and limit changes above.
Free to cite. All data is CC BY 4.0: quote, embed or republish it with a link to AI Plan Tracker. Raw data: tools.json · changes.json. Spotted an error? Every fact links to its source and the date we checked it.