Added Oct 28, 2026
Arthur
Freemium · $60/moDiscovery, monitoring and governance for enterprise AI agents
What is Arthur?
Arthur finds the AI agents running across a company, traces how they work and enforces policies on them. Security, governance and engineering teams share one control plane, from prompt experiments to continuous evaluation in production.
Discovery scans endpoints, cloud accounts and private data centers to inventory agents, including unregistered shadow agents such as coding assistants, Bedrock or Vertex agents and MCP servers. Step-level tracing shows each reasoning step, tool call, retrieval and handoff, and runtime guardrails raise alerts on anomalies.
Audit logs, lineage and ongoing risk assessment support compliance reviews, while builders get custom metrics, dashboards and evals. The free tier covers a few monitored use cases with unlimited seats, and Premium raises that to 100 with custom alerts and webhooks.
Features
- Agent discovery
- Step-level tracing
- Runtime guardrails
- Audit logs and lineage
- Custom metrics and alerts
Tags
Releases
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Arthur was added to the directory.
Organization
Arthur AI
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- $60/mo
- Billing frequency
- Monthly
Arthur 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. Plans change often, so confirm on the Arthur site.Official pricing
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Pros and cons
Pros
- Finds shadow agents across environments
- Free tier with unlimited seats
- Covers security and evaluation together
Cons
- Free tier monitors only 4 use cases
- Enterprise features need a sales call
- Broad platform takes time to set up
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Q&A
What is Arthur?
Arthur finds the AI agents running across a company, traces how they work and enforces policies on them. Security, governance and engineering teams share one control plane, from prompt experiments to continuous evaluation in production.
Can Arthur detect agents nobody registered?
Yes. Its discovery scans endpoints, cloud and on-premises environments and lists shadow agents alongside registered ones.
How much does Arthur cost?
Arthur is freemium, with paid plans from $60/mo.
Is there a free version of Arthur?
Yes. Arthur has a free plan, and paid plans add more usage and features.
What are the main features of Arthur?
Agent discovery, Step-level tracing, Runtime guardrails, Audit logs and lineage, Custom metrics and alerts.
Who makes Arthur?
Arthur is made by Arthur AI.
What are the best alternatives to Arthur?
Popular alternatives include LangSmith, Weights & Biases, Langfuse.