What Castellum.AI does

Castellum.AI is a New York-based, venture-backed software company that builds an AI-native compliance platform for financial crime prevention, primarily serving banks, credit unions, fintechs, and digital asset exchanges. Founded in 2019, the company combines proprietary in-house risk data aggregated from over 200,000 global sources — covering sanctions, politically exposed persons (PEPs), adverse media, and shelf companies — with AML/KYC screening engines and a family of explainable AI agents branded as Arbiter that autonomously adjudicate L1 and L2 compliance alerts in under one second.

The core technology stack includes real-time screening with claimed 94% false-positive reduction and 83% reduction in alert review time, a public API for programmatic integration, SOC 2 Type 2 security posture, and modular deployment into customer core systems and case management workflows. AI agents are explicitly trained on guidance from US regulators including the OCC, NCUA, NY DFS, and California DFPI, and produce audit-ready human-readable narratives with source references for each alert decision. The platform supports KYC/KYB onboarding, sanctions and PEPs screening, adverse media screening, transaction screening, real-time monitoring, and specialized modules for transaction monitoring, fraud monitoring, and policy enforcement.

Castellum.AI operates a subscription-based SaaS revenue model with quote-based enterprise annual pricing and an API-first distribution channel layered on top of enterprise field sales. Total capital raised is $12.9 million, including an oversubscribed $8.5 million Series A in July 2025 led by Curql with participation from BTech Consortium, Framework Venture Partners, and existing seed investors. The company has 11–50 employees and a single publicly named customer logo (Lead Bank), with third-party recognition from FinTech Global's FinCrimeTech50 2026 list and the Celent KYC Solution Provider Report.

Name

Castellum.AI

Legal name

Castellum.AI

Website

https://Castellum.AI

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Castellum.AI is a New York-based AI-native compliance platform that combines proprietary risk data, AML/KYC screening, and explainable Arbiter AI agents to autonomously resolve financial crime alerts for banks, credit unions, fintechs, and digital asset exchanges.

Ownership category

akta.pro rank

Product category

RegTech / Financial Crime Compliance Software

NAICS

Investigation and Personal Background Check Services (561611)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

KYC/KYB & Customer Onboarding (CIP, beneficial ownership, screening) (FSAGAFAB)

akta.pro secondary industries

Name Matching, Entity Resolution & Screening Optimization (FSAMAMAE), Case Management, Investigations & SAR/STR Filing (FSAMAMAF), Enterprise AI Governance, Risk & Compliance Platforms (Model Risk, Audit, Policies) (HDAEANAE), Fraud, Risk, KYC/AML & Compliance Platforms (BPAMAFAI)

Keywords

• AML compliance software
• KYC screening platform
• Sanctions screening
• Transaction monitoring
• Adverse media screening

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

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

Revenue model

1. AI Agent and AML/KYC Platform Subscription: SaaS-based compliance platform providing AI agents for alert resolution, KYC/KYB onboarding, sanctions and PEPs screening, adverse media screening, transaction screening, and real-time monitoring. Delivered via API integration or direct enterprise deployment.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Castellum.AI sells an AI-powered Agentic Screening and Alert Resolution platform for AML/KYC compliance. The platform combines proprietary risk data from 200,000+ global sources with explainable Arbiter AI agents that autonomously resolve L1 and L2 alerts for onboarding, transaction screening, pKYC and other workflows in under a second. Customers access the platform via API integration or direct enterprise deployment for sanctions/PEPs screening, KYC/KYB onboarding, adverse media screening, transaction screening, and real-time monitoring.

Product overview

Castellum.AI is an Agentic Screening and Alert Resolution platform for AML/KYC compliance that combines in-house risk data (200,000+ sources), AML/KYC screening, and AI agents. The platform operates as a unified system where the core Arbiter AI Agents resolve L1 and L2 alerts while integrated modules handle Sanctions & PEPs Screening, Transaction Screening, Real-Time Monitoring, KYC/KYB Onboarding, and AI-Powered Adverse Media Screening. Specialized agents (Transaction Monitoring Agent, Fraud Monitoring Agent, Sanctions & PEPs Agent, Policies & Procedures Agent, Adverse Media Agent) extend the platform for specific use cases. The platform is built for banks, credit unions, fintechs, supply chain, and crypto compliance operations, with claims of 94% fewer false positives and 83% reduction in alert review time.

Differentiator

Problem solved

Functional benefit

Brands

• Arbiter: AI agent for AML/KYC alert resolution, capable of resolving L1 and L2 alerts for onboarding, transaction screening, and pKYC in less than a second.

Products and services

• Arbiter AI Agents AI agent system that autonomously resolves L1 and L2 alerts for onboarding, transaction screening, pKYC, and other compliance workflows in under a second. Provides documented, auditable reasoning and auto-escalates to human analysts when needed. For banks, credit unions, fintechs, and digital asset exchanges.
• KYC/KYB Onboarding Customer onboarding solution that instantly identifies risky customers during the KYC/KYB process while enabling compliant onboarding of the remaining applicants through real-time AML/KYC screening. For financial institutions onboarding consumer and business customers.
• Sanctions & PEPs Screening Global sanctions and politically exposed persons (PEPs) screening against 1,000+ watchlists with 5-minute data update cycles. Enriched data from 200,000+ sources globally enables detection of real threats while reducing false positives from similar names.
• AI-Powered Adverse Media Screening Adverse media screening using AI to process global news and media sources for financial crime risk signals. Delivers reliable results leading to higher-value alerts and faster alert reviews for compliance teams.
• Transaction Screening Real-time transaction screening against global risk data that screens large transaction volumes with 94% fewer false positives than traditional methods. For financial institutions processing payments and transfers.
• Real-Time Monitoring Continuous monitoring of customer risk profiles with instant notification of changes. Ensures customers are never seen with the same alert twice and risk profiles stay current. For ongoing KYC and pKYC workflows.
• Shelf Company Data Data product providing information on shelf companies (shell corporations often used for financial crime) to support due diligence and compliance screening.
• Lookbacks Retrospective screening and monitoring service for reviewing historical customers or transactions against current sanctions and watchlist data.

Quantifiable outcome

• 94% reduction in false positives
• +4 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature8 records

Scale indicators7 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• ComplyAdvantage: Direct KYC/AML competitor offering AI-driven sanctions, PEPs and adverse media screening with a global risk database. Closely comparable product surface to Castellum.AI's screening stack; both target banks, fintechs and crypto firms.
• Silent Eight: AI-native AML alert adjudication and screening platform for financial institutions. Directly comparable to Castellum.AI's Arbiter agent concept, targeting false-positive reduction in name/transaction screening.
• Lucinity: AML compliance platform with a "Luci" AI copilot for case management and alert resolution. Same AI-augmented AML thesis as Castellum.AI and similar target customers in regulated banking.
• Napier AI: AML transaction monitoring and sanctions screening platform with AI-driven scenario tuning. Directly comparable end-to-end compliance offering, serving similar regulated financial institution clients.
• Featurespace: Adaptive behavioral analytics for fraud and AML transaction monitoring, used by major banks. Comparable AI-driven alert generation and reduction use cases though heavier on fraud/transaction monitoring than KYC onboarding.
• Tookitaki: AI-powered AML/CFT platform combining transaction monitoring, screening and case management. Similar RegTech category, AI-first positioning, and bank/fintech customer base.

Broad incumbents

• NICE Actimize: Largest enterprise AML/CTF platform vendor, deeply embedded in tier-1 banks globally. Competes with Castellum.AI for the same compliance budget but with a much broader suite (KYC, TM, trade surveillance) and incumbent position.
• SAS Anti-Money Laundering: Long-established AML platform from SAS, used by many large banks worldwide. Competes on the same enterprise compliance workflow but with deeper legacy integrations than Castellum.AI.
• Oracle Financial Services AML: Enterprise AML suite (formerly Mantas) from Oracle for tier-1 banks. Competes for the same compliance budget at the largest institutions, with broader infrastructure and longer reference base.
• Refinitiv World-Check (LSEG): Leading sanctions, PEPs and adverse media screening data and platform from LSEG. Closely comparable on the screening/data side; differs in being more data-list-centric than AI-native alert resolution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/CastellumAI

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds3 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 Castellum.AI