TapPass vs Arthur AI. Observing models, or governing agents.
Arthur AI monitors model performance, bias and explainability. TapPass governs AI agents at runtime, scanning and blocking in real time, before damage happens.
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Arthur AI observes model performance, detects bias and provides explainability.
performancebiasexplainabilityTapPass governs each interaction: what data an agent sends, which tools it calls, what the response contains. It observes, reports and blocks.
allowholdredactblockon the recordWhen to choose Arthur AI. When to choose TapPass.
This comparison is about scope, not quality. Arthur AI does its job well. The question is which job you need done.
- Model performance monitoring is a core need.
- Bias and fairness monitoring matter most.
- Observing and reporting on models over time is the job.
- An agent sending personal data must be blocked before the request reaches the model.
- Agents call tools, and each call needs permission or a person.
- You need a hash-chained record, cost budgets and EU headquarters.
TapPass and Arthur AI, capability by capability.
| Capability | TapPass | Arthur AI |
|---|---|---|
| Model performance monitoring | Partly: Behavioural drift detection | Yes: Core feature |
| Bias and fairness monitoring | No: Not the focus | Yes: Core feature |
| Runtime prompt governance | Yes: Full runtime pipeline | Partly: Arthur Shield (firewall) |
| PII detection and redaction | Yes: With tokenisation | Partly: Via Shield |
| Data classification | Yes: Multi-level, with routing | No: Not available |
| Tamper-evident audit trail | Yes: Cryptographically chained | Partly: Logging, not hash-chained |
| Tool and function call governance | Yes: Permissions, scanning, zones | No: Not available |
| Human approval gates | Yes: Real-time workflows | No: Not available |
| Cost tracking and budgets | Yes: Per-agent enforcement | No: Not available |
| Session isolation | Yes: Taint tracking | No: Not available |
| EU AI Act compliance | Yes: Art. 9, 12, 13, 14 | Partly: Compliance reporting |
| Self-hosted | Yes: Docker and Helm | Yes: On-premises available |
| EU headquartered | Yes: Belgium | No: US based |
Scroll the table sideways to see both products.
Based on public product information as we understood it when we wrote this page. Products change quickly: if something about Arthur AI is out of date, tell us and we will correct it.
Monitoring and governance. Different jobs.
Arthur AI observes model performance, detects bias and provides explainability. The focus is understanding how models behave over time.
TapPass governs every interaction: what data the agent sends, what tools it calls, what the response contains. Real-time scanning, blocking and recording.
Arthur AI observes and reports. TapPass observes, reports and blocks: when an agent sends personal data, TapPass stops the request before it reaches the model.
Keep Arthur AI. Add the layer that decides.
Arthur AI tells you how your models perform. TapPass decides what your agents may do with them. If you already run Arthur AI, TapPass sits in front of it rather than replacing it.
Do we have to choose between Arthur AI and TapPass?
No. Arthur AI monitors how models behave over time; TapPass governs what agents do on each call. If you already run Arthur AI, TapPass sits in front of it rather than replacing it.
Does TapPass monitor bias and fairness?
No, that is not its focus. TapPass detects behavioural drift in agents, such as shifts in classifications, cost and tool use, and blocks or holds individual calls.
What does TapPass do that monitoring cannot?
It acts before the call runs: redacting personal data, blocking a tool outside the agent’s job, or holding an action for a named person, and it records every decision on a hash-chained record.
How current is this comparison?
It reflects public product information about Arthur AI as we understood it when we wrote it. Products change quickly. If something here is out of date, tell us and we will correct it.
Monitoring tells you what happened. Governance prevents it.
Connect one agent and see every call TapPass would have held, stopped or routed elsewhere. Nothing is blocked while you learn.
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