Unit 21
San Francisco, US · Founded 2018 · 118 employees on LinkedIn · 18 known investors
Unit21 provides an AI-powered fraud prevention and AML compliance platform that automates financial crime detection, investigations, and regulatory filing across the full lifecycle. The platform serves fintechs and financial institutions globally with configurable AI agents that reduce false positives and accelerate case resolution while maintaining regulatory defensibility.
Also known as Unit 21 · Unit21
Founders & leadership
Unit 21 was founded in 2018 by Trisha Kothari.

Investors · 18
Also in the syndicate · 6
Funding
SEC filings, press & company announcements$45M disclosed across 1 of 4 rounds · 2020–2023
- Undisclosed amountSeries CJul 2023Source ↗
- $45MSeries CJun 2023 · 2 sources
South Park Commons (lead), Tiger Global (lead)
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Valuation · disclosed
Disclosed eventsSource: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.
Company profile
researched Aug 2026Unit21 offers a cloud-based risk and compliance platform that combines fraud prevention and anti-money-laundering (AML) operations in a single system. Its product suite spans real-time transaction monitoring, AML transaction monitoring, sanctions and payment screening, case management, customer risk rating, regulatory filing, device intelligence, and a fraud consortium. The company positions the platform as "AI Risk Infrastructure": configurable AI agents both perform detection and execute investigations end to end, gathering evidence, applying risk reasoning, drafting narratives, and producing regulator-ready filings with a human in the loop and a complete audit trail.
Earlier public descriptions characterize the company as a no-code/low-code activity monitoring and business-logic engine that lets non-technical operators and analysts build and run rules on streams of data without engineering support, initially targeted at KYC/AML and fraud detection in financial services with an intent to extend to additional use cases such as identity verification. Product areas described for 2025 include AI check-fraud detection that analyzes both sides of a check image, AI rule recommendations, anomaly detection models, alert-level AI recommendations and AI-written case narratives, a "Build Your Own Agent" (BYOA) capability, millisecond real-time rules with velocity logic and dynamic allow/deny/step-up decisions, onboarding and ongoing watchlist screening against sanctions, PEP and adverse media lists, payment screening, use of customer risk ratings inside the detection model builder, expanded 314(a) matching on SSN, date of birth and address with refined fuzzy matching, direct CTR filing to FinCEN from within the platform, and a "Why Did This Flag?" alert explainability view.
The company states it can integrate with existing systems and sit on any database, and reports platform-level figures including 4.5 billion monthly events monitored, roughly 48.3 million analyst hours saved, and involvement in 5% of SARs filed in the US.
Founding story
Unit21 was founded in 2018 by Trisha Kothari and Clarence Chio, who previously worked at Affirm and Shape Security respectively.
Business model
Unit21 sells a business-to-business software platform to fintechs and financial institutions, delivered as a cloud-based system with an API and dashboard, and integrations into customers' existing data systems. Positioning emphasizes replacing in-house build efforts (one customer executive cited saving months of engineering effort) and reducing operational cost by cutting review time and false positives rather than adding analyst headcount.
Traction
Company-reported platform metrics include 4.5 billion events monitored monthly, about 48.3 million analyst hours saved, 5% of US SAR filings, and more than 200 customers across 90 countries. In 2021 the company said it monitored over $40 billion of transactions and reduced customer service response times by 50%; customers such as Bakkt and Lili Banking were reported to have cut false positives by 85% and fraud loss by 50%. Recent case-study figures cited on the website include a 72% reduction in alerts using AI agents, 57% AI-driven automation of alert reviews, 93% reduction in false positives, 44% faster reviews, 50% reduction in false positives with 2x fraud caught, and audit preparation time reduced from nearly a week to under 30 minutes. The 2020 funding announcement cited 400% growth.
Latest developments
A January 2026 product recap describes 2025 releases: an AI suite covering detection (AI check fraud detection, AI rule recommendations, anomaly detection models) and investigation (alert-level AI recommendations, one-click AI-written narratives, Build Your Own Agent), millisecond real-time rules with velocity logic and dynamic decisions, expanded device intelligence, onboarding and ongoing watchlist screening plus payment screening unified in one case management flow, customer risk ratings usable in the detection model builder, expanded 314(a) matching, direct CTR filing to FinCEN, and a "Why Did This Flag?" explainability feature.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Unit21 describes itself as a leader in AI risk infrastructure serving fintechs and financial institutions globally. Third-party coverage in 2021 noted a $300 million valuation at its Series B, inclusion in The Information's list of 50 Most Promising Startups, designation as a World Economic Forum Technology Pioneer, and work with Twitter on its revamped verification process. The company claims involvement in 5% of SARs filed in the US.
Unit21 differentiates on executing investigations rather than only summarizing or generating alerts, unifying fraud and AML data in one model instead of siloed systems, providing traceable and policy-mapped AI decisions with documented evidence for regulators and auditors, and offering no-code/low-code configurability so non-technical risk and compliance operators can build and tune detection logic themselves.
Technology
The platform applies machine learning and configurable AI agents across the financial crime lifecycle. Data is organized in a connected data model that unifies fraud, AML, enhanced due diligence and sanctions records into real-time entity networks enriched with behavioral and device intelligence, supporting graph analysis. Detection combines rule-based logic (including real-time rules executing in milliseconds and velocity thresholds), anomaly detection models, and AI rule recommendations derived from investigator behavior and alert outcomes. Device intelligence evaluates signals such as jailbroken or rooted devices, emulators, and device fingerprint reuse across cases. AI agents generate narratives and triage recommendations, learn from analyst feedback and historical outcomes, and log every AI action in an audit trail so decisions are traceable and mapped to customer policies. The company historically emphasized a no-code/low-code layer that exposes AI/ML capabilities to non-technical business analysts.
Go-to-market
Direct enterprise sales supported by demo requests, published customer case studies and metrics, content marketing via a company blog, and sponsored third-party editorial coverage. Proceeds from the 2020 round were earmarked for expanding the product and distribution-focused management team, increasing sales and marketing, and launching in new industries. The company added a dedicated go-to-market recruiting lead in 2022 to build out those teams.
Fintechs, banks and other financial institutions, plus crypto companies and small-business-facing platforms. Named customers across sources include Intuit, Coinbase, Gusto, LINE, Chime, Chainalysis, Bakkt, Lili Banking, Sallie Mae, Green Dot and Gate US.
Geography
Headquartered in San Francisco, with a distributed team described as having members around the world (including staff based in Seattle). Company materials cite more than 200 customers across 90 countries.
History
After its 2018 founding, Unit21 raised a $13 million round led by A.Capital Ventures in October 2020, citing 400% growth. In July 2021 it announced a $34 million Series B led by Tiger Global at a $300 million valuation, around the same period it was named to The Information's 50 Most Promising Startups list and recognized as a World Economic Forum Technology Pioneer. The company reported monitoring over $40 billion of transactions in 2021 and reached 100 employees in January 2022. In 2024 it deployed a third-party AI virtual assistant for customer support. Through 2025 it shifted its positioning toward agentic AI, shipping an AI suite for detection and investigation, real-time decisioning, lifecycle screening, and direct CTR filing to FinCEN, recapped in a January 2026 post authored by Trisha Kothari in the role of Chairman and Co-Founder.
Compiled by commissioned research from 7 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
4 people who came through Unit 21 went on to found or lead other companies.
Competitors · 5
by search overlapCompanies competing with Unit 21 for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 8
launches, deals, and filingsReleases included AI check fraud detection, AI rule recommendations, anomaly detection models, alert-level AI recommendations, AI-written narratives, Build Your Own Agent, real-time and velocity rules with dynamic decisions, device intelligence, onboarding and ongoing watchlist screening, payment screening, customer risk rating in the detection model builder, expanded 314(a) matching, direct CTR filing to FinCEN, and "Why Did This Flag?" explainability.
Case study reports Unit21 integrated an AI-powered virtual assistant to provide self-service support, reducing support volume and accelerating customer onboarding.
Company blog announced the 100-employee milestone and introduced its 100th hire, a GTM recruiting lead based in Seattle.
Series B announced in TechCrunch on July 7, 2021, per Not Boring's July 8, 2021 sponsored deep dive.
$34M source ↗
Funding round to grow product and distribution-focused management team, increase sales and marketing, and launch in new industries; company cited 400% growth.
$13M source ↗
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 7
primary sources listed
- Unit 21unit21.ai · web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Unit 21 do?
- Unit21 sells an agentic AI platform that unifies fraud detection and AML compliance operations for fintechs and banks.
- Who founded Unit 21?
- Unit 21 was founded by Trisha Kothari in 2018.
- Who are Unit 21's investors?
- Unit 21's investors include A.Capital Ventures, Angel Collective Opportunity Fund, Core Venture Capital, Flucas Ventures, Gradient Ventures, ICONIQ, Vibe Capital, Village Global and 4 more.
- How much funding has Unit 21 raised?
- Unit 21 has disclosed $45M raised across 1 of its 4 known rounds.
- Where is Unit 21 headquartered?
- Unit 21 is headquartered in San Francisco, US.








