Arthur
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.
- Company typePrivate
- Founded2019
- HeadquartersNew York, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
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.
Arthur firmographics
Firmographics- 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
Arthur industry classification
Industry- 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
Where Arthur is headquartered
LocationHeadquarters
- HQ city
- New York
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Arthur business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations
Revenue model
- 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.
- 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.
- 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
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Self-Serve SaaS (Multi-tenant) |
| Subscription | Annual | Enterprise Deployment (VPC / On-Prem / Dedicated) |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels8 records
Arthur product offering
Product offeringCore 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
Companies that use Arthur
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Arthur technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration12 records
AI capability12 records
Feature6 records
Arthur partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core and minor.
- Google Cloud (Vertex AI, Gemini, BigQuery, Cloud Run, App Engine, GKE)coreArthur 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)coreArthur 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.
- HumanaminorHumana 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.
- AxiosminorAxios 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.
- UpsolveminorUpsolve 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.
- ExpelminorExpel uses Arthur for ML monitoring, reporting significant reduction in monitoring maintenance workload. Case study customer demonstrating cybersecurity sector use case.
- LenovominorLenovo 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
Arthur competitors and assessment
Company assessmentMarket position
Weaknesses4 records
Competitive moat6 records
Key risks5 records
Key highlights7 records
Customer concentration
Arthur social profiles
Digital presenceArthur compliance and trust
Trust signalCompliance2 records
Arthur financial estimates
Financial estimateRevenue estimate
Valuation estimate
Arthur leadership team
Management profileNumber of profiles
Profiles6 records
Arthur funding detail
Funding detailFunding overview
Funding rounds4 records
Investors8 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Arthur M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Arthur
What does Arthur do?
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.
Is Arthur a public or private company?
Arthur is a private company. It is classified as venture growth investor backed and is currently operating.
When was Arthur founded?
Arthur was founded in 2019. It employs 11 to 50 people.
Where is Arthur based?
Arthur is headquartered in New York, United States, in the North America region.
How does Arthur make money?
Three revenue lines are on record. Enterprise SaaS Platform Subscription is the primary driver. The others are cloud Marketplace Licensing and self-Serve SaaS.
Does Arthur have an API?
Yes. Arthur provides an API-first platform with REST APIs for managing projects, models, metrics, alerts, and jobs. The Arthur Evals Engine is deployable as Docker/Kubernetes in customer environments and integrates with CI/CD pipelines via REST. The platform supports OpenTelemetry (OTEL) for agent traces and outcomes tracking, and incidents can be routed via webhooks (including Slack) into workflow tools. Developer documentation is at docs.arthur.ai.
What industry is Arthur in?
Arthur's product category is AI Observability and Governance Platform. Its primary akta.pro industry code is HDAEANAF, AI Observability, Monitoring & Evaluation Platforms (Drift, Quality, Safety), with a secondary code of HDAEANAG, Responsible AI, Security & Privacy Platforms (Safety, Guardrails, PII). Its NAICS code is 5132 and its SIC code is 7370.