kitio.aiArthur vs Kakunin
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Kakunin has the lower starting price: about $39 a month, against $60 for Arthur.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Agent discovery
- Step-level tracing
- Runtime guardrails
- Audit logs and lineage
- Custom metrics and alerts
- X.509 agent certificates
- Real-time behavior monitoring
- Immutable audit log
- Compliance report generation
- Trust scoring and auto-revoke
| Feature | Arthur | Kakunin |
|---|---|---|
| Best for | Discovery, monitoring and governance for enterprise AI agents | Identity, monitoring and audit trails for autonomous AI agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Free trial |
| Starting price | $60/mo | $39/mo |
| Free plan | Yes | No, 30-day trial |
| Made by | Arthur AI | Kakunin |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Kakunin has the lower starting price: about $39 a month, against $60 for Arthur.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Up to 4 monitored use cases
- Unlimited seats
- Cloud data connectors
Premium
$60/mo
- Up to 100 use cases
- Custom metrics and dashboards
- Custom alerts and webhooks
Enterprise
Contact sales
- Dedicated infrastructure
- Governance and support
2 plans
Starter
$39/mo
- Per agent, minimum 5
- MiCA and EU AI Act reports
- 90-day audit retention
Professional
$99/mo
- Per agent, minimum 20
- Audit export API
- 12-month audit retention
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
Arthur
- Finds shadow agents across environments
- Free tier with unlimited seats
- Covers security and evaluation together
- Free tier monitors only 4 use cases
- Enterprise features need a sales call
- Broad platform takes time to set up
Kakunin
- Maps to several regulatory frameworks
- Fast registration by API
- No platform or seat fees
- Minimum of 5 agents on Starter
- Trial requires a card
- Alert channels cost extra
Which one should you choose?
Choose Arthur if you want:
- Finds shadow agents across environments
- Free tier with unlimited seats
- Covers security and evaluation together
Watch out: free tier monitors only 4 use cases.
Choose Kakunin if you want:
- Maps to several regulatory frameworks
- Fast registration by API
- No platform or seat fees
Watch out: minimum of 5 agents on starter.
Arthur vs Kakunin FAQ
What is the difference between Arthur and Kakunin?
Arthur: Discovery, monitoring and governance for enterprise AI agents. Kakunin: Identity, monitoring and audit trails for autonomous AI agents. Both are models & apis tools.
Is Arthur or Kakunin cheaper?
Kakunin has the lower starting price: about $39 a month, against $60 for Arthur.
Do Arthur and Kakunin have free plans?
Arthur: Yes. Kakunin: No, 30-day trial.
Who makes Arthur?
Arthur is made by Arthur AI, based in United States.
Who makes Kakunin?
Kakunin is made by Kakunin.
Which should I choose, Arthur or Kakunin?
Choose Arthur if you value finds shadow agents across environments and free tier with unlimited seats. Choose Kakunin if you value maps to several regulatory frameworks and fast registration by api.