Arthur

What Arthur does

Arthur AI (legal entity Arthur AI, Inc., headquartered in New York) provides a unified AI performance platform for monitoring, evaluating, and governing AI systems across the full lifecycle — spanning traditional ML, generative AI, and agentic AI workloads. The platform is built on a proprietary federated Control Plane / Data Plane architecture in which the data plane executes evaluations, guardrails, and monitoring inside the customer's VPC or on-prem environment, while only aggregated metrics and metadata flow to a centralized control plane for governance, visualization, and policy enforcement. Core product capabilities include the Agent Discovery & Governance (ADG) Platform for autonomous agent oversight, the open-source Arthur Evals Engine for runtime evaluation, Arthur Shield (LLM firewall) for PII/toxicity/prompt-injection protection, Arthur Bench for LLM comparison, Built-in Guardrails for production AI applications, and the Agent Development Lifecycle (ADLC) methodology. The platform supports model-agnostic monitoring across recommender systems, NLP, computer vision, forecasting, RAG pipelines, and agentic systems.

The company serves Fortune 100 enterprises in regulated industries — banking, healthcare, and insurance — where SOC 2 Type II compliance, HIPAA-aligned data handling (via standard BAA), data residency, and auditability are gating requirements. Named reference customers include Humana (fairness monitoring for preventative care ML), Axios (model monitoring at scale), Expel (50% reduction in ML monitoring maintenance), and Upsolve (rapid agentic AI deployment). Revenue is generated through enterprise SaaS subscriptions (annual/multi-year), transactional cloud marketplace licensing via AWS and Google Cloud, and a self-serve multi-tenant SaaS tier for smaller teams. Distribution combines direct enterprise field sales with Forward Deployed Engineers, hyperscaler co-sell through marketplace listings, and product-led growth via open-source tools, GitHub, Discord, and documentation. The company was founded in 2019 by Adam Wenchel (formerly VP of AI at Capital One) and Zach Fry, is backed by Acrew Capital, Greycroft, Index Ventures, Work-Bench, Homebrew, Plexo Capital, and Ame Cloud Ventures, and has raised approximately $60.3M in disclosed funding through a $42M Series B in September 2022.

Name

Arthur

Legal name

Arthur AI, Inc.

Website

https://arthur.ai

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Arthur AI provides a unified platform for monitoring, evaluating, and governing AI systems — traditional ML, generative AI, and autonomous agents — serving Fortune 100 enterprises in regulated industries via a federated control plane deployed through SaaS, on-prem, or cloud marketplaces.

Ownership category

akta.pro rank

Product category

AI Observability and Governance Platform

NAICS

Software Publishers (5132), Computer Systems Design Services (541512)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

AI Observability, Monitoring & Evaluation Platforms (Drift, Quality, Safety) (HDAEANAF)

akta.pro secondary industries

Responsible AI, Security & Privacy Platforms (Safety, Guardrails, PII) (HDAEANAG), Enterprise AI Governance, Risk & Compliance Platforms (Model Risk, Audit, Policies) (HDAEANAE), Audit, Explainability & Accountability Tooling (traceability, reporting) (HDAAAKAL)

Keywords

• AI model monitoring
• LLM evaluation platform
• AI governance software
• Agent observability
• ML performance management

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations

Revenue model

1. Enterprise SaaS Platform Subscription: Annual or multi-year subscription licenses for the Arthur Platform, with tiered options for SaaS vs. Enterprise (VPC/on-prem) deployments. Enterprise tier includes dedicated single-tenant environments, configurable SLAs, compliance guarantees, and data residency options. Professional Services and Forward Deployed Engineering are bundled into enterprise onboarding.
2. Cloud Marketplace Licensing: Arthur is available for purchase through AWS Marketplace and Google Cloud Marketplace, allowing enterprise customers to procure via existing cloud commit thresholds. This provides a transactional licensing layer accessible through cloud procurement processes.
3. Self-Serve SaaS: Multi-tenant SaaS version is self-serve and immediately accessible — teams can sign up, invite collaborators, and connect their first model in minutes. Subscription-based with monthly or annual billing options.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

Arthur provides a unified AI performance and governance platform that monitors, evaluates, and improves machine learning models, generative AI applications, and autonomous AI agents across their full lifecycle. The platform operates on a federated Control Plane / Data Plane architecture, keeping sensitive inference data inside the customer's VPC while aggregating metrics centrally, and offers deployable evaluation runners, built-in guardrails, and agent discovery capabilities for enterprise AI teams.

Product overview

Arthur AI is an AI performance company offering a unified platform for monitoring, evaluating, and governing AI systems across traditional ML, generative AI, and agentic AI workloads. The core Arthur Platform serves as an AI control plane, encompassing Agent Discovery & Governance (ADG) for discovering and governing AI agents across cloud environments, the Arthur Evals Engine (open-sourced in 2025) for executing evaluations in customer environments, Built-in Guardrails for protecting AI applications, and AI Performance Evaluation capabilities. The product portfolio includes specialized modules like Arthur Shield (LLM firewall), Arthur Bench (open-source LLM evaluation tool), and Arthur Chat (custom chatbot), all powered by the Agent Development Lifecycle (ADLC) methodology. The platform supports full lifecycle coverage from pre-production evaluation through runtime inference and continuous production monitoring, with flexible deployment via SaaS, on-prem, or cloud marketplaces (AWS and Google Cloud).

Differentiator

Problem solved

Functional benefit

Brands

• Arthur Bench: Open-source evaluation tool for comparing different LLM options using consistent metrics.
• Arthur Shield
• Arthur Evals Engine
• Arthur Chat
• Agent Discovery & Governance (ADG) Platform

Products and services

• Arthur Platform (AI Control Plane) Unified AI performance platform for monitoring, evaluating, and governing traditional ML, generative AI, and agentic AI systems across the full lifecycle, from pre-production to runtime and production deployment. Deployable as SaaS, VPC, on-prem, or via cloud marketplaces.
• Agent Discovery & Governance (ADG) Platform Enterprise platform for discovering, cataloging, and governing AI agents across fragmented cloud environments. Provides automated agent discovery, policy enforcement, performance evaluation, and security controls for autonomous AI agents running on Vertex AI, Bedrock, Agent Foundry, and custom stacks.
• Arthur Evals Engine Deployable evaluation runner (Docker/Kubernetes) that executes evaluations and guardrail checks in the customer's own environment. Computes metrics for GenAI/agentic workflows (hallucination, prompt injection, toxicity, PII) and traditional ML (performance/drift) without requiring inbound connections.
• Arthur Shield World's first firewall for large language models, protecting organizations against PII/sensitive data leakage, hallucinations, toxic language generation, and prompt injections. Built-in guardrails for production AI applications with sub-200ms p95 rule validation.
• Arthur Bench Open-source LLM evaluation tool for comparing different LLM options using consistent metrics. Includes a full suite of scoring metrics for summarization quality, hallucinations, and custom benchmarks. Available as both local (GitHub) and cloud-based SaaS.
• Arthur Chat Highly configurable, plug-and-play LLM-powered chat experience for business. Ready to deploy in under an hour with built-in protection from Arthur Shield. Customizable and buildable on top of internal knowledge bases.

Quantifiable outcome

• Maintenance workload reduction of 50% for ML monitoring tasks
• +2 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration12 records

AI capability12 records

Feature6 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Google Cloud (Vertex AI, Gemini, BigQuery, Cloud Run, App Engine, GKE)coreTechnology or Integration · 7 January 2026Arthur launched its Agent Discovery & Governance (ADG) platform on Google Cloud Marketplace in January 2026, enabling enterprises to discover, govern, and continuously evaluate agentic AI applications within their Google Cloud environments. The platform integrates natively with Google Cloud services including Vertex AI, Gemini, BigQuery, Cloud Run, App Engine, and Google Kubernetes Engine.
• Amazon Web Services (AWS)coreTechnology or Integration · 16 July 2025Arthur Platform became available in the AWS AI Agents Marketplace in July 2025, enabling AWS customers to deploy Arthur's AI governance capabilities natively within their AWS environments. This extends Arthur's go-to-market through AWS's enterprise customer base.
• HumanaminorStrategic or Co-development PartnerHumana is a customer using Arthur's platform for fairness monitoring and data drift detection on preventative care ML models. Arthur credits Humana's use case as a reference for the platform's value in healthcare AI governance.
• AxiosminorStrategic or Co-development PartnerAxios is a customer using Arthur's ML performance monitoring platform. Axios case study highlights peace of mind and 50% maintenance workload reduction through Arthur's unified model monitoring solution.
• UpsolveminorStrategic or Co-development PartnerUpsolve uses Arthur to build trusted agentic AI, with the company's first production model going from idea to implementation in hours using Arthur's integration framework.
• ExpelminorStrategic or Co-development PartnerExpel uses Arthur for ML monitoring, reporting significant reduction in monitoring maintenance workload. Case study customer demonstrating cybersecurity sector use case.
• LenovominorStrategic or Co-development PartnerLenovo and Arthur showcased their enterprise XR partnership at ISE 2026 in Barcelona, highlighting AI-powered meeting avatars, scalable immersive training, and interactive digital twins. The partnership focuses on practical enterprise XR use cases with measurable ROI.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Market position

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/itsArthurAI
• GitHubgithub.com/arthur-ai/arthur-engine
• YouTubeyoutube.com/playlist?list=PLwqopCRUSpX0Fzy43nNqINNAMvzWjbqhF
• LinkedInlinkedin.com/company/arthurai

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds4 records

Investors8 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Arthur