Softwr

Documentation · head to head

Grammarly vs Mintlify

Grammarly logo

Grammarly

Documentation

Great writing, simplified

From
Free
Rated
-
Full reviewWebsite
Mintlify logo

Mintlify

Content Creation

Documentation platform for building and maintaining developer docs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Grammarly occasional false positives and grammatically incorrect suggestions that can introduce errors; Mintlify starter plan excludes webhooks, analytics, and integrations, pushing most teams toward the $450/month Pro tier
  • They diverge on capability: Grammarly covers Grammar checking, Mintlify covers Web editor.

Where they differ

Only the attributes on which Grammarly and Mintlify actually diverge.

Attributes where Grammarly and Mintlify differ
AttributeGrammarlyMintlify
Pricing modelUnknownfreemium
PlatformsWeb, macOS, Windows, iOS, Androidweb, api
CategoryDocumentationContent Creation
Founded20092022

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Grammarly

  • Grammar checking
  • Spelling correction
  • Punctuation
  • Clarity suggestions
  • Engagement feedback
  • Delivery insights
  • Plagiarism checker
  • Citation generator

Only in Mintlify

  • Web editor
  • Custom domain
  • Authentication
  • MCP server
  • API playground
  • AI agent and assistant
  • Automations

What people use each for

The jobs each tool is most often brought in to do.

Grammarly

  • Email writingnot Mintlify
  • Document editingnot Mintlify
  • Academic writingnot Mintlify
  • Business communicationnot Mintlify
  • Content creationnot Mintlify

Mintlify

  • Hosting versioned API and product documentationnot Grammarly
  • Building docs that AI agents can query via MCPnot Grammarly
  • Collaborative documentation editing for engineering teamsnot Grammarly
  • Gating internal or partner docs behind authenticationnot Grammarly
  • Automating documentation updates alongside code changesnot Grammarly

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Grammarly

  • Occasional false positives and grammatically incorrect suggestions that can introduce errors
  • Privacy concerns about sending text to Grammarly's servers for analysis
  • AI capabilities sometimes produce hallucinations and fabricated citations that appear grammatically correct

Mintlify

  • Starter plan excludes webhooks, analytics, and integrations, pushing most teams toward the $450/month Pro tier
  • Pro plan AI credits are metered with per-credit overage charges, making costs variable for heavy agent usage
  • Jump from free Starter to Pro is a large price step with no mid-tier option
  • Enterprise features like SSO and SLAs require contacting sales rather than transparent pricing

Pricing, plan by plan

Grammarly

Free
  • FreeFree
    • Basic grammar and spelling checks
    • Tone visibility
    • 100 AI prompts per month
  • Pro$12/month
    • Sentence rewrites
    • Tone adjustment
    • Plagiarism and AI detection

Mintlify

Free
  • StarterFree
    • 5 editor seats
    • Custom domain
    • Web editor
  • Pro$450/month
    • Unlimited editor seats
    • Agent and Assistant
    • Automations
  • Enterprise$undefined/month
    • Unlimited editor seats
    • SSO, SCIM, RBAC
    • Performance SLA

Which should you pick?

Choose Grammarly if

  • You need grammar checking.
  • You want to start without paying.
  • You work on Web, macOS, Windows, iOS, Android.
  • You also want spelling correction.
Grammarly review

Choose Mintlify if

  • You need web editor.
  • You want to start without paying.
  • You work on web, api.
  • You also want custom domain.
Mintlify review

Questions people ask

Is Grammarly or Mintlify better?
Neither clearly leads. Grammarly starts at Free and Mintlify at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Grammarly or Mintlify?
Grammarly starts at Free and Mintlify at Free.
Does Grammarly or Mintlify run on more platforms?
Grammarly runs on Web, macOS, Windows, iOS, Android. Mintlify runs on web, api.
Can I use Grammarly for free?
Both have a free tier, so you can try either at no cost before committing.
What is Grammarly best used for?
Grammarly is most often used for email writing, document editing, academic writing, business communication. Of those, email writing and document editing are not what Mintlify is typically brought in for.
What can Grammarly do that Mintlify cannot?
Grammarly covers Grammar checking, Spelling correction, Punctuation, Clarity suggestions. Mintlify covers Web editor, Custom domain, Authentication, MCP server.

Answered from the vendors’ own pages

Grammarly: Does Grammarly have a free version?

Yes, Grammarly offers a free tier with basic spelling, grammar, and punctuation checks, tone visibility, and 100 AI prompts per month. The Pro plan ($12/month annual) adds sentence rewriting, plagiarism detection, and 2,000 AI prompts.

Source
Mintlify: Is there a free plan for Mintlify?

Yes, the Starter plan is free with no credit card required, offering 5 editor seats, custom domain hosting, the web editor, authentication, MCP server, and an API playground.

Source
Grammarly: What platforms does Grammarly work with?

Grammarly works across 1 million+ apps including Google Docs, Microsoft Word, Outlook, Slack, Gmail, and web browsers. It also integrates with productivity tools like Asana, Jira, Monday.com, Confluence, and HubSpot.

Source
Mintlify: What does the Pro plan cost and include?

Pro costs $450/month (or discounted annually) with unlimited editor seats plus the AI Agent, Assistant, Automations, preview deployments, and admin APIs.

Source
Grammarly: Can I use Grammarly offline?

Grammarly requires an internet connection to function, though the browser extension works with some offline text areas. For offline use, the desktop app and browser extensions sync when reconnected.

Source
Mintlify: How are AI credits metered?

Pro includes 10,000 AI credits per month consumed by the Assistant, Agent, and Automations, with overage billed at $0.01 per credit; additional credit packs can be purchased.

Source
Grammarly: What is included in the Enterprise plan?

The Enterprise plan includes unlimited team members, dedicated support, custom roles and permissions, data loss prevention, bring-your-own-key encryption, and unlimited AI prompts. Pricing is custom and available by contacting sales.

Source
Mintlify: What do new users get to try AI features?

New users receive their first month of AI credits free, letting them try the Agent and Assistant before being billed for usage.

Source
Mintlify: What does Enterprise add over Pro?

Enterprise adds SSO, SCIM, RBAC, a performance SLA, advanced insights, enterprise-grade security and legal terms, and migration support, priced via custom sales contact.

Source
Share

Related pages

More on Grammarly

More on Mintlify

Keep looking

Other head to heads