GitHub Copilot
Grammarly
| Feature | GitHub Copilot | Grammarly |
|---|---|---|
| Pricing | Free / from $10/mo | Free / from $12/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | developers, open-source-contributors, students, engineering-teams | writers, students, professionals, non-native-speakers |
| Founded | 2021 | 2009 |
| Code Completion | ✓ | ✗ |
| Chat | ✓ | ✗ |
| Code Review | ✓ | ✗ |
| Cli Assistance | ✓ | ✗ |
| Multi Model | ✓ | ✗ |
| Workspace Context | ✓ | ✗ |
| Extensions | ✓ | ✗ |
| Grammar | ✗ | ✓ |
| Spelling | ✗ | ✓ |
| Tone | ✗ | ✓ |
| Clarity | ✗ | ✓ |
| Plagiarism | ✗ | ✓ |
| Browser Extension | ✗ | ✓ |
✓ GitHub Copilot Pros
- Works in any IDE (VS Code, JetBrains, Neovim)
- Excellent code completion accuracy
- Chat mode for explaining and refactoring code
- Free for open-source contributors and students
✗ GitHub Copilot Cons
- Suggestions can be repetitive
- Sometimes generates outdated patterns
- Privacy concerns with code sent to cloud
✓ Grammarly Pros
- Works everywhere
- Clear suggestions
- Tone detection
- Plagiarism checker
✗ Grammarly Cons
- Premium is pricey
- Can over-correct
- Privacy concerns
The Verdict
GitHub Copilot is built for developers and open source contributors, with a focus on code-completion and chat. Grammarly targets writers and students and leads with grammar and spelling.
Pricing is close: GitHub Copilot starts at $10/mo versus $12/mo for Grammarly — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, GitHub Copilot offers broader built-in capabilities (7 features vs 6), while Grammarly takes a more focused approach — which can mean a simpler, faster onboarding experience.
Both tools are a solid fit for students — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.