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Developer Tools · head to head

GitHub Copilot vs Grammarly

GitHub Copilot logo

GitHub Copilot

Developer Tools

AI pair programmer for developers

From
$10/month
Rated
-
Full reviewWebsite
Grammarly logo

Grammarly

Documentation

Great writing, simplified

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Grammarly has a free tier, so it costs nothing to try first.
  • Each has a real cost: GitHub Copilot agent mode lacks deep tool orchestration and iterative execution compared to specialized agentic tools; Grammarly occasional false positives and grammatically incorrect suggestions that can introduce errors
  • They diverge on capability: GitHub Copilot covers Code completion, Grammarly covers Grammar checking.

Where they differ

Only the attributes on which GitHub Copilot and Grammarly actually diverge.

Attributes where GitHub Copilot and Grammarly differ
AttributeGitHub CopilotGrammarly
Starting price$10/monthFree
Pricing modelsubscriptionUnknown
Free tierNoYes
PlatformsWeb, Windows, macOS, LinuxWeb, macOS, Windows, iOS, Android
CategoryDeveloper ToolsDocumentation
Founded20082009

Identical on both: 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 GitHub Copilot

  • Code completion
  • Code generation
  • Chat interface
  • Multi-language support
  • VS Code
  • JetBrains IDEs
  • Neovim
  • Visual Studio

Only in Grammarly

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

What people use each for

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

GitHub Copilot

  • ai tools managementnot Grammarly
  • Workflow automationnot Grammarly
  • Reportingnot Grammarly

Grammarly

  • Email writingnot GitHub Copilot
  • Document editingnot GitHub Copilot
  • Academic writingnot GitHub Copilot
  • Business communicationnot GitHub Copilot
  • Content creationnot GitHub Copilot

Where each one falls short

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

GitHub Copilot

  • Agent mode lacks deep tool orchestration and iterative execution compared to specialized agentic tools
  • Suggestions for niche or specialized programming languages are less accurate due to limited training data
  • Less effective with non-English prompts or grammatically incorrect developer instructions
  • Free tier severely limited to 2,000 completions and 50 chat requests per month

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

Pricing, plan by plan

GitHub Copilot

$10/month
  • Individual$10/month
    • Code completions
    • Chat in IDE
    • CLI assistance
  • Business$19/month
    • Organization management
    • Policy controls
    • Audit logs

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

Which should you pick?

Choose GitHub Copilot if

  • You need code completion.
  • You work on Web, Windows, macOS, Linux.
  • You also want code generation.
GitHub Copilot review

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

Questions people ask

Is GitHub Copilot or Grammarly better?
Neither clearly leads. GitHub Copilot starts at $10/month and Grammarly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GitHub Copilot or Grammarly?
Grammarly has a free tier; the other does not. Paid plans start at $10/month for GitHub Copilot and Free for Grammarly.
Does GitHub Copilot or Grammarly run on more platforms?
GitHub Copilot runs on Web, Windows, macOS, Linux. Grammarly runs on Web, macOS, Windows, iOS, Android.
Can I use Grammarly for free?
Yes. Grammarly has a free tier, so you can try it without paying. GitHub Copilot starts at $10/month.
What is GitHub Copilot best used for?
GitHub Copilot is most often used for ai tools management, workflow automation, reporting. Of those, ai tools management and workflow automation are not what Grammarly is typically brought in for.
What can GitHub Copilot do that Grammarly cannot?
GitHub Copilot covers Code completion, Code generation, Chat interface, Multi-language support. Grammarly covers Grammar checking, Spelling correction, Punctuation, Clarity suggestions.

Answered from the vendors’ own pages

GitHub Copilot: Does GitHub Copilot have a free tier?

Yes. GitHub Copilot Free offers 2,000 code completions and 50 chat requests per month at no cost with no credit card required. Students and open-source maintainers get free Pro access.

Source
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
GitHub Copilot: What IDEs and editors are supported?

GitHub Copilot works in VS Code, Visual Studio, JetBrains IDEs (IntelliJ, PyCharm, WebStorm), Vim, Neovim, and Azure Data Studio with extensions providing code suggestions and chat capabilities.

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
GitHub Copilot: What programming languages does Copilot support?

Copilot supports more than 10 core languages including JavaScript, TypeScript, Python, Java, C#, Go, and Rust. Performance is strongest for these popular languages with extensive open-source training data.

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
GitHub Copilot: How does the free tier compare to paid plans?

Free tier limits completions and chat to 2,000 and 50 per month. Pro ($10/month) offers unlimited completions, while Pro+ ($39/month) adds access to frontier AI models and agent mode for autonomous multi-file edits.

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
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