kitio.aiQuillBot vs Lightkey
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Lightkey has the lower starting price: about $4 a month, against $20 for QuillBot.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Paraphraser with multiple modes
- Grammar checker
- Summarizer
- AI detector
- Citation generator
- Multi-word text prediction
- Real-time spelling suggestions
- 80+ languages offline
- Chrome and Edge extensions
- Team terminology predictions
| Feature | QuillBot | Lightkey |
|---|---|---|
| Best for | Paraphraser with grammar checker, summarizer and citation tools | On-device predictive text for Windows that learns your writing style |
| Category | Writing | Writing |
| Pricing model | Freemium | Free trial |
| Starting price | $19.95/mo | $49.95/yr |
| Free plan | Yes | No, 30-day trial |
| Made by | Learneo | Lightkey |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Lightkey has the lower starting price: about $4 a month, against $20 for QuillBot.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- 125-word paraphrases
- 2 paraphrasing modes
- Grammar checker
Premium
$19.95/mo
- Unlimited paraphrasing
- All modes
- Advanced grammar suggestions
Team
Contact sales
- Everything in Premium
- Multiple users, one purchase
2 plans
Pro
$49.95/yr
- Per license
- Predicts up to 18 words
- 80+ languages offline
- Lifetime license $229.95
Business
$69.95/yr
- Per license
- Team terminology predictions
- Team analytics
- Site-wide deployment
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
QuillBot
- Many rewrite modes to choose from
- Generous free tier
- Several writing tools under one login
- Free plan limits word count per paraphrase
- Rewrites can change the meaning
- Heavy use raises academic integrity questions
Lightkey
- Runs on device and offline
- Works across most Windows apps
- Lifetime license option
- Windows only, no Mac version
- No free plan after the 30-day trial
- Predictions need time to learn your style
Which one should you choose?
Choose QuillBot if you want:
- Many rewrite modes to choose from
- Generous free tier
- Several writing tools under one login
Watch out: free plan limits word count per paraphrase.
Choose Lightkey if you want:
- Runs on device and offline
- Works across most Windows apps
- Lifetime license option
Watch out: windows only, no mac version.
QuillBot vs Lightkey FAQ
What is the difference between QuillBot and Lightkey?
QuillBot: Paraphraser with grammar checker, summarizer and citation tools. Lightkey: On-device predictive text for Windows that learns your writing style. Both are writing tools.
Is QuillBot or Lightkey cheaper?
Lightkey has the lower starting price: about $4 a month, against $20 for QuillBot.
Do QuillBot and Lightkey have free plans?
QuillBot: Yes. Lightkey: No, 30-day trial.
Who makes QuillBot?
QuillBot is made by Learneo, based in United States.
Who makes Lightkey?
Lightkey is made by Lightkey.
Which should I choose, QuillBot or Lightkey?
Choose QuillBot if you value many rewrite modes to choose from and generous free tier. Choose Lightkey if you value runs on device and offline and works across most windows apps.