kitio.aiGrammarly vs GPTLocalhost
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Grammarly starts at $30/mo and GPTLocalhost starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Grammar and spelling checks
- Tone detection
- Full-sentence rewrites
- Plagiarism checker
- Authorship tracking
- Word add-in
- Works with Ollama and LM Studio
- Offline mode
- Model switching
- Cross-document generation
| Feature | Grammarly | GPTLocalhost |
|---|---|---|
| Best for | Grammar, tone and rewrite suggestions in almost every app you type in | Microsoft Word add-in that runs local AI models on your own machine |
| Category | Writing | Writing |
| Pricing model | Freemium | Paid |
| Starting price | $30/mo | See pricing page |
| Free plan | Yes | No |
| Made by | Superhuman Platform Inc. | GPTLocalhost |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Grammarly starts at $30/mo and GPTLocalhost starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Spelling and grammar checks
- Tone detection
- 100 AI prompts
Pro
$30/mo
- Per member
- Full-sentence rewrites
- Tone adjustments
- Plagiarism and AI detection
Enterprise
Contact sales
- BYOK encryption
- Custom roles and permissions
- Data loss prevention
- Dedicated support
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Grammarly
- Works in nearly every app and website
- Free plan catches most basic errors
- Clear explanations for each suggestion
- Best features need the paid plan
- Can flatten a writer's personal style
- English only
GPTLocalhost
- Document text stays on your machine
- Supports many local model runners
- One-time payment option
- You must set up a local model yourself
- Output quality depends on your hardware
- Only works inside Microsoft Word
Which one should you choose?
Choose Grammarly if you want:
- Works in nearly every app and website
- Free plan catches most basic errors
- Clear explanations for each suggestion
Watch out: best features need the paid plan.
Choose GPTLocalhost if you want:
- Document text stays on your machine
- Supports many local model runners
- One-time payment option
Watch out: you must set up a local model yourself.
Grammarly vs GPTLocalhost FAQ
What is the difference between Grammarly and GPTLocalhost?
Grammarly: Grammar, tone and rewrite suggestions in almost every app you type in. GPTLocalhost: Microsoft Word add-in that runs local AI models on your own machine. Both are writing tools.
Is Grammarly or GPTLocalhost cheaper?
Grammarly starts at $30/mo and GPTLocalhost starts at See pricing page. Check both pricing pages for current plans.
Do Grammarly and GPTLocalhost have free plans?
Grammarly: Yes. GPTLocalhost: No.
Who makes Grammarly?
Grammarly is made by Superhuman Platform Inc., based in United States.
Who makes GPTLocalhost?
GPTLocalhost is made by GPTLocalhost.
Which should I choose, Grammarly or GPTLocalhost?
Choose Grammarly if you value works in nearly every app and website and free plan catches most basic errors. Choose GPTLocalhost if you value document text stays on your machine and supports many local model runners.