Grammarcheck.ai
Verified Oct 15, 2026 ActiveGrammar, spelling, and punctuation checker with one-click fixes plus a plagiarism checker and humanizer.
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
- Paid options from
- $2.50/mo
- Billing
- Monthly
Free plan 5,000 credits a month. LITE $4/month (40,000 credits) or $2.50/month billed yearly at $30; PRO $7/month or $4/month billed yearly at $48, unlimited grammar, punctuation and paraphrase use while plagiarism, AI-check and humanizer stay credit-metered. Separate API plans from $10/month for 40,000 credits.
Use tool ↗About Grammarcheck.ai
Grammarcheck.ai checks text for grammar, spelling, and punctuation errors and offers one-click corrections, aimed at students, authors, bloggers, and non-native English speakers proofreading academic work, manuscripts, or blog posts. Beyond the core checker it also offers a paraphraser, a plagiarism checker, and an AI humanizer, each metered separately by a credit system, from 1 credit per word for grammar checking up to 5 credits per word for humanizing text. The free plan includes 5,000 credits a month; paid plans run $4/month for 40,000 credits or $7/month for unlimited credits when billed monthly, dropping to $2.50 and $4 a month respectively when billed yearly. The site does not name a company or location beyond its own brand.
- Platforms
- Web · API
- API
- Yes
- Last verified
- Oct 15, 2026
Verified sources
- Pricing page: Free 5,000 credits; LITE $4/month or $2.50 billed yearly ($30); PRO $7/month or $4.00 billed yearly ($48); per-word credit costs from 1 (grammar) to 5 (humanizer) (15 October 2026)grammarcheck.ai ↗
- API plans page: API Basic $10/month for 40,000 credits and API Business $50 for 100,000 credits at 40 requests a minute, with API documentation (15 October 2026)grammarcheck.ai ↗
Is Grammarcheck.ai legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- Jun 25, 2021 (5 years ago)Registry record (RDAP), registrar NameCheap, Inc., looked up Sep 21, 2026
- TLS certificate
- Issued by Google Trust Services, valid until Dec 16, 2026Seen in our own connection to the site on Oct 15, 2026
- Last checked
- Oct 15, 2026The site answered
- Operated by
- Grammarcheck.aiOur research, card verified Oct 15, 2026
Pros & cons of Grammarcheck.ai
Grammarcheck.ai covers the basics, grammar, spelling, punctuation, plus a paraphraser, plagiarism checker, and humanizer bundled into the same credit pool. Pricing is clearly published and cheap relative to the bigger names in this space, though the credit system means heavier tools like the humanizer burn through an allowance much faster than plain grammar checking.
Pros
- Clear, published pricing with both monthly and yearly options
- Free tier includes a real usage allowance, not just a trial window
- Bundles a paraphraser, plagiarism checker, and humanizer alongside grammar checking
- Accepts common payment methods including PayPal and Apple Pay
Cons
- Credit costs vary a lot by tool, so the humanizer and plagiarism checker drain an allowance far faster than grammar checking
- No company name or location disclosed beyond the product's own brand
Best for
- Students and bloggers wanting a low-cost checker with extras bundled in
- Non-native English speakers who want one-click fixes rather than just flags
Not for
- Teams needing shared brand-style guides or team accounts
- Anyone who wants unlimited use of every tool on the cheapest paid tier
Watch out: Unlimited credits only apply to the PRO tier's core tools; heavier features stay credit-metered per the site's own cost table.
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Grammarcheck.ai head-to-head
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