Arthur Shield
Platform for discovering, monitoring, and controlling AI applications at organizational scale
- Also known as
- arthur-shield
Available worldwide · Popular in: US
What is Arthur Shield?
An AI governance system that helps teams find all AI agents in their environment, assess their risk, enforce policies, and monitor performance—supporting various deployment models from cloud to on-premises, with compliance features for regulated industries.
Arthur Shield pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free tier with unlimited evals. Premium SaaS from $60/mo. Custom enterprise pricing.
Free SaaS
FreeFor small teams getting started with AI
- evals
- 3000
- users
- unlimited
- inferences
- unlimited
Premium SaaS
For AI native start-ups and growing orgs
- evals
- 75000
Enterprise On-Prem
Contact salesFor teams with advanced needs or global scale; includes dedicated and managed VPC options with customized workflows
What Arthur Shield does
The capabilities that matter for ai guardrails, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Architecture model
- Managed cloud inline proxy
- Prompt injection and jailbreak blocking
- ✓
- Inbound pii and credit card masking redaction
- ✓
- Outbound toxicity and competitor mention blocking
- ✓
- Hallucination and topical off brand drift detection
- ✓
- Sub 50ms latency guarantees for proxy routing
- ✗
- Custom regex and deterministic denylist rulesets
- ✓
- Streaming token interception and chunked eval
- ✓
- Rag retrieval chunk poisoning defense
- ✓
- Zero data retention and prompt privacy guarantees
- ✗
- SOC2 type ii
- ✓
- ISO 27001
- ✗
- Pricing model
- Flat enterprise tier
Platform & deployment
Independently observed- Web
- Cloud / SaaS
- Hybrid
- On-premise
- Self-hosted
Integrations (7)
Independently observed- OpenTelemetry
- Snowflake
- AWS Bedrock
- Google Vertex AI
- AWS
- MCP
- Claude Code
Arthur Shield alternatives
Other ai guardrails we track, ranked by the same independent score.
- Enkrypt AISecurity and compliance platform that automatically detects and blocks threats in AI agents while generating audit-ready evidencemedium · 55%
- NVIDIA NeMo Guardrailslow · 34%
- HiddenLayerComprehensive platform that discovers, tests, and protects machine learning models throughout their lifecycle from supply chain risks and runtime attacks.low · 21%
- Llama Guardlow · 27%
- Lakera GuardAI security platform that detects and blocks threats to large language model applications in real-timemedium · 55%
- Rebufflow · 31%
Compare Arthur Shield
Side by side against other ai guardrails, attribute by attribute, with a source on every value.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Arthur Shield, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Pricing transparency | 100 | 0.08 | 8.4 | ✓ |
| Capabilities | 92 | 0.05 | 4.5 | ✓ |
| Security posture | 45 | 0.07 | 3.3 | ✓ |
| Price level | 25 | 0.05 | 1.3 | ✓ |
| Integrations | 26 | 0.04 | 1.1 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Iso 27001: No · Soc2 type ii: Yes · Pricing model: flat_enterprise_tier · Architecture model: managed_cloud_inline_proxy · Rag retrieval chunk poisoning defense: Yes · Prompt injection and jailbreak blocking: Yes | mediumsource · 2026-08-25 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 7 | mediumsource · 2026-08-25 · 60% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | mediumsource · 2026-08-25 · 50% |