kitio.aiArthur vs Raindrop
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Arthur starts at $60/mo and Raindrop starts at See pricing page. Check both pricing pages for current plans.
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
- Agent run tracing
- Silent failure detection
- Triage agent in Slack and MCP
- Signals and experiments
- Local replay and debugging
- Pre-release simulations
| Feature | Arthur | Raindrop |
|---|---|---|
| Best for | Discovery, monitoring and governance for enterprise AI agents | Monitoring that finds silent failures in production AI agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $60/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Arthur AI | Raindrop |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Arthur starts at $60/mo and Raindrop 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
- 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
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
Raindrop
- Focuses on failures users actually hit
- Works from Slack and MCP
- Free start without a card
- Plan prices not shown in the evidence
- Simulations still in early access
- Mainly useful once agents are in production
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 Raindrop if you want:
- Focuses on failures users actually hit
- Works from Slack and MCP
- Free start without a card
Watch out: plan prices not shown in the evidence.
Arthur vs Raindrop FAQ
What is the difference between Arthur and Raindrop?
Arthur: Discovery, monitoring and governance for enterprise AI agents. Raindrop: Monitoring that finds silent failures in production AI agents. Both are models & apis tools.
Is Arthur or Raindrop cheaper?
Arthur starts at $60/mo and Raindrop starts at See pricing page. Check both pricing pages for current plans.
Do Arthur and Raindrop have free plans?
Arthur: Yes. Raindrop: Yes.
Who makes Arthur?
Arthur is made by Arthur AI, based in United States.
Who makes Raindrop?
Raindrop is made by Raindrop, based in United States.
Which should I choose, Arthur or Raindrop?
Choose Arthur if you value finds shadow agents across environments and free tier with unlimited seats. Choose Raindrop if you value focuses on failures users actually hit and works from slack and mcp.