kitio.aiBrex vs Onthos
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Brex starts at $12/mo and Onthos 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
- Corporate cards
- Business banking
- AI expense assistant
- Budgets and spend limits
- Travel booking
- Industry classification
- Thematic factor models
- Thesis to company universe
- Source-linked knowledge base
- Access for AI agents
| Feature | Brex | Onthos |
|---|---|---|
| Best for | AI-powered corporate cards, banking and expense management | Company, industry and theme ontology for investors and AI agents |
| Category | Legal, finance & HR | Legal, finance & HR |
| Pricing model | Freemium | Paid |
| Starting price | $12/mo | See pricing page |
| Free plan | Yes | No |
| Made by | Brex (Capital One) | Onthos |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Brex starts at $12/mo and Onthos starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Essentials
Free
- Per user
- Global cards, 1 local card program
- Up to two entities
- Accounting integrations
Premium
$12/mo
- Per user
- Custom expense policies
- AI compliance audit detection
- Advanced approval chains
Enterprise
Custom
- Unlimited entities
- Local card issuance
- Named account manager
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
Brex
- Global card and reimbursement support
- Good AI receipt handling
- Free entry tier
- Advanced features cost per user
- Eligibility rules for cards
- Ownership change may shift terms
Onthos
- Covers public and private companies
- Every fact linked to a source
- Useful for building thematic indices
- Built for financial institutions only
- No public pricing
- Recently renamed, so docs may still say Theia
Which one should you choose?
Choose Brex if you want:
- Global card and reimbursement support
- Good AI receipt handling
- Free entry tier
Watch out: advanced features cost per user.
Choose Onthos if you want:
- Covers public and private companies
- Every fact linked to a source
- Useful for building thematic indices
Watch out: built for financial institutions only.
Brex vs Onthos FAQ
What is the difference between Brex and Onthos?
Brex: AI-powered corporate cards, banking and expense management. Onthos: Company, industry and theme ontology for investors and AI agents. Both are legal, finance & hr tools.
Is Brex or Onthos cheaper?
Brex starts at $12/mo and Onthos starts at See pricing page. Check both pricing pages for current plans.
Do Brex and Onthos have free plans?
Brex: Yes. Onthos: No.
Who makes Brex?
Brex is made by Brex (Capital One), based in United States.
Who makes Onthos?
Onthos is made by Onthos.
Which should I choose, Brex or Onthos?
Choose Brex if you value global card and reimbursement support and good ai receipt handling. Choose Onthos if you value covers public and private companies and every fact linked to a source.