kitio.aiLumin vs CaliberAI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Lumin starts at $9/mo and CaliberAI 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
- AI agreement generator
- AI agreement editor
- PDF editing
- E-signatures
- Fillable PDFs
- eSign API
- Defamation risk detection
- Harmful content flagging
- Whole-article evaluation
- Comment and review moderation
- Browser extension and WordPress plugin
- API with custom thresholds
| Feature | Lumin | CaliberAI |
|---|---|---|
| Best for | PDF editing, e-signing and AI agreement drafting in one workspace | AI that flags defamatory and harmful content before it is published |
| Category | Legal, finance & HR | Legal, finance & HR |
| Pricing model | Freemium | Paid |
| Starting price | $9/mo | See pricing page |
| Free plan | Yes | No |
| Made by | Lumin | CaliberAI |
| Based in | – | Ireland |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Lumin starts at $9/mo and CaliberAI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Free
Free
- Basic PDF editing
- Basic e-signatures
- Annotate up to 3 docs
Starter
$9/mo
- Student plan
- 10 docs per month
- Google integration
Pro
$19/mo
- Per team
- 200 docs per month
- Advanced PDF editing
- 5 agreements per month
Business
$99/mo
- Member access control
- Domain control
- Slack and Drive connectors
- Priority support
Enterprise
Contact sales
- Enterprise SSO
- Storage options
- Premium onboarding
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Lumin
- Drafting, editing and signing in one place
- Free plan covers basic PDF work
- Covers many common contract types
- Free plan allows only 3 documents a month
- Pro limits agreements to 5 per month
- Pro pricing is per team, with caps on documents
CaliberAI
- Focused on legal risk, not just toxicity
- Works inside editors' existing tools
- Thresholds tuned to your risk level
- No public pricing
- Sales contact needed to get started
- Mainly suited to publishers
Which one should you choose?
Choose Lumin if you want:
- Drafting, editing and signing in one place
- Free plan covers basic PDF work
- Covers many common contract types
Watch out: free plan allows only 3 documents a month.
Choose CaliberAI if you want:
- Focused on legal risk, not just toxicity
- Works inside editors' existing tools
- Thresholds tuned to your risk level
Watch out: no public pricing.
Lumin vs CaliberAI FAQ
What is the difference between Lumin and CaliberAI?
Lumin: PDF editing, e-signing and AI agreement drafting in one workspace. CaliberAI: AI that flags defamatory and harmful content before it is published. Both are legal, finance & hr tools.
Is Lumin or CaliberAI cheaper?
Lumin starts at $9/mo and CaliberAI starts at See pricing page. Check both pricing pages for current plans.
Do Lumin and CaliberAI have free plans?
Lumin: Yes. CaliberAI: No.
Who makes Lumin?
Lumin is made by Lumin.
Who makes CaliberAI?
CaliberAI is made by CaliberAI, based in Ireland.
Which should I choose, Lumin or CaliberAI?
Choose Lumin if you value drafting, editing and signing in one place and free plan covers basic pdf work. Choose CaliberAI if you value focused on legal risk, not just toxicity and works inside editors' existing tools.