Alternatives directory

Arthur alternatives

Vendors in the directory with the most taxonomy overlap with Arthur — shared frameworks, capabilities, industries, and integrations.

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Last verified April 21, 2026

How this shortlist is built

Ranking is deterministic: same product category (heaviest signal), then shared framework coverage, capabilities, industries, and integrations documented on each vendor's profile. No editorial narrative has been written for this page yet.

If you want a long-form comparison with pros, cons, and verdicts, see our curated alternatives pages or run the matchmaker.

At-a-glance

AlternativeShared frameworksShared capabilitiesPricing
Fiddler AIEU Artificial Intelligence Act, NIST AI Risk Management Framework, GDPR Article 22 — Automated Individual Decision-MakingAI Model Inventory, Policy Management, Bias & Fairness Testing +4usage basedCompare
Holistic AIEU Artificial Intelligence Act, NIST AI Risk Management Framework, GDPR Article 22 — Automated Individual Decision-MakingAI Model Inventory, Policy Management, Bias & Fairness Testing +3contact onlyCompare
CalypsoAIEU Artificial Intelligence Act, GDPR Article 22 — Automated Individual Decision-MakingAI Model Inventory, Policy Management, Bias & Fairness Testing +4contact onlyCompare
ModelOpEU Artificial Intelligence Act, NIST AI Risk Management FrameworkAI Model Inventory, Policy Management, Bias & Fairness Testing +3contact onlyCompare
OneTrust AI GovernanceEU Artificial Intelligence Act, NIST AI Risk Management FrameworkAI Model Inventory, Policy Management, Bias & Fairness Testing +3contact onlyCompare
Credo AIEU Artificial Intelligence Act, NIST AI Risk Management FrameworkAI Model Inventory, Policy Management, Bias & Fairness Testing +3contact onlyCompare

How each alternative compares

#1

Fiddler AI

AI observability and security for agentic and generative systems.

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Capabilities Fiddler AI has that Arthur doesn't

  • Risk Assessment Workflow
  • LLM Red Teaming

Common ground: both serve Financial Services, Healthcare, Insurance, SaaS & Technology, Defense & National Security.

#2

Holistic AI

End-to-end AI governance built on UCL-grounded research.

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Capabilities Holistic AI has that Arthur doesn't

  • Risk Assessment Workflow
  • LLM Red Teaming
  • Regulatory Intelligence

Capabilities Arthur has that Holistic AI doesn't

  • LLM Guardrails & Content Filtering

Common ground: both serve Financial Services, Healthcare, Insurance, SaaS & Technology.

#3

CalypsoAI

Adaptive AI security for enterprise GenAI.

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Capabilities CalypsoAI has that Arthur doesn't

  • Risk Assessment Workflow
  • LLM Red Teaming
  • Regulatory Intelligence

Common ground: both serve Financial Services, Healthcare, Defense & National Security, SaaS & Technology.

#4

ModelOp

Enterprise AI lifecycle management and governance platform

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Capabilities ModelOp has that Arthur doesn't

  • Risk Assessment Workflow

Capabilities Arthur has that ModelOp doesn't

  • LLM Guardrails & Content Filtering

Common ground: both serve Financial Services, Healthcare, Insurance, Defense & National Security.

#5

OneTrust AI Governance

AI governance software that centralizes risk, automates compliance, and enforces controls across the AI lifecycle

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Capabilities OneTrust AI Governance has that Arthur doesn't

  • Risk Assessment Workflow
  • Third-Party AI Vendor Risk
  • Regulatory Intelligence

Capabilities Arthur has that OneTrust AI Governance doesn't

  • LLM Guardrails & Content Filtering

Common ground: both serve Financial Services, Healthcare, SaaS & Technology, Defense & National Security.

#6

Credo AI

Context-driven AI governance for regulated enterprises.

Compare side-by-side

Capabilities Credo AI has that Arthur doesn't

  • Risk Assessment Workflow
  • LLM Red Teaming
  • Third-Party AI Vendor Risk
  • Regulatory Intelligence

Capabilities Arthur has that Credo AI doesn't

  • LLM Guardrails & Content Filtering

Common ground: both serve Financial Services, Healthcare, Insurance, Defense & National Security.

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