Unit21 Alternatives for Fraud and AML (2026)

The best Unit21 alternatives in 2026 are Runtime, Sardine, Hummingbird, Flagright, SEON, and Alloy. Sardine is the closest match if you also want onboarding, Hummingbird for investigation-heavy programs, Flagright for filing across many jurisdictions, SEON for published pricing, and Alloy for identity orchestration. Runtime is the AI agent harness for payment and fintech teams, and it works the cases any of them raise across support, payment ops, finance, and risk.

We make Runtime, so weigh our pick accordingly. Vendor facts below come from each vendor's own site or announcements.

Why teams look for Unit21 alternatives

Unit21 is a serious AML platform. It calls itself AI risk infrastructure for fraud and AML, covers real-time and AML transaction monitoring, sanctions and payment screening, customer risk rating, case management, a fraud consortium, and device intelligence, and files SARs and CTRs directly with FinCEN. It says it monitors 4.5 billion events a month. The reasons teams still compare are about fit:

• Onboarding. Unit21 has no native KYC product and connects to vendors such as Persona, Socure, and Middesk instead.
• Data location. Unit21 ingests your data. Some teams want monitoring to run in their own warehouse.
• Scope. Unit21's agents work inside Unit21. Cases that need the ledger, processor, or support history leave its scope.
• Pricing model. Unit21 does not publish pricing.

At a glance

The best Unit21 alternatives

Runtime

Runtime is the AI agent harness for payment and fintech teams. It does not run monitoring rules or file SARs. It gives compliance, risk, payment ops, finance, and support teams agents that run on isolated computers in your cloud and work the cases a monitoring platform raises. Agents draft the disposition or SAR narrative with evidence and wait for a person before money moves.

Best for: fintechs and sponsor bank programs whose AML cases spill into other teams. Strengths: your cloud and your models; approvals and a full record per run; agents built from your SOPs with a forward-deployed engineer. Watch out for: you still need a monitoring and filing system. Runtime sits next to one.

Sardine

Sardine calls itself an agentic financial crime platform. It covers onboarding (KYC and KYB), fraud, and AML, including transaction monitoring, sanctions screening, case management, and sponsor bank monitoring. It lists ten AI agents, including Transaction Monitoring, Graph Analyst, and SAR Generation, and runs the Sonar consortium. Customers include FIS, Nubank, Gusto, and Deel.

Best for: fintechs and sponsor banks that want onboarding, fraud, and AML from one vendor. Strengths: native KYC and KYB; device intelligence and behavioral biometrics; ready-made risk agents. Watch out for: its SAR Generation agent drafts filings, while Unit21 lists direct FinCEN e-filing. Pricing is not published.

Hummingbird

Hummingbird is a compliance orchestration platform where analysts and AI agents work in a shared workspace with one audit trail. It covers sanctions, PEP, and adverse media screening, transaction monitoring that runs directly on your data warehouse, investigations, and regulatory reporting, with SAR, STR, and CTR filing. Its agents include Research, Review, Narrative, and a SAR Agent that submits after a person approves. Customers on its site include Raymond James, DraftKings, Plaid, and Paxos.

Best for: banks, fintechs, and crypto companies where investigations and reporting are the core job. Strengths: monitoring rules on Snowflake, Databricks, or BigQuery; reports for FIUs beyond FinCEN and FINTRAC; 50+ app connectors. Watch out for: its fraud use case is framed for non-real-time rails like ACH and wire, so it is not a millisecond decision engine. Pricing is not published.

Flagright

Flagright calls itself the AI operating system for financial crime compliance. It covers transaction monitoring, dynamic risk scoring, case management, watchlist screening, and regulatory filing, with AI Forensics agents for screening, monitoring, governance, and quality assurance. It pre-fills SAR narratives for approval and files to FinCEN and 70+ goAML jurisdictions. Customers include Betterment, Banked, and HitPay.

Best for: payment processors, digital banks, and crypto companies operating across many jurisdictions. Strengths: real-time monitoring; broad goAML filing coverage; explainability with annotated timelines and confidence scores. Watch out for: its agents sit on Flagright's own data, and integration with third-party monitoring systems is not documented. Pricing is not published.

SEON

SEON combines fraud prevention and AML compliance using more than 1,100 first-party data signals. It covers device intelligence, behavioral biometrics, ID verification, AML screening, transaction monitoring, case management, and SAR and STR reporting. Customers named on its site include Plaid, Revolut, and Afterpay.

Best for: mid-market fintech, lending, iGaming, and marketplaces. Strengths: published pricing, starting at $699 per month for 2,500 fraud checks; an average 14-day implementation; ID verification included, which Unit21 leaves to partners. Watch out for: AML and case management are on the custom Premium plan, not Starter.

Alloy

Alloy is an identity and risk decisioning platform for banks, credit unions, and fintechs. It orchestrates hundreds of data partners into no-code workflows for onboarding, KYC, KYB, AML screening, transaction monitoring, fraud, and credit decisioning. Its AI Assistant, launched in February 2026, recommends decisions for a person to approve, and Alloy reports more than 900 financial institutions and fintechs as customers.

Best for: banks and lenders that want onboarding and ongoing monitoring on one decision engine. Strengths: data partner choice; lifecycle decisioning past onboarding; credit decisioning on the same engine. Watch out for: it orchestrates other vendors' signals rather than running its own fraud consortium, and its depth in AML case work and filing is lighter than Unit21's. Pricing is not published.

Where Runtime enters the picture

Every platform here decides whether activity is suspicious, and most now ship agents for their own case queue. The case rarely stays there. An alert on a merchant's outbound wires becomes a payout hold for payment ops, a reserve question for finance, a ticket from the merchant, and an RFI from the sponsor bank.

Runtime is the AI agent harness for payment and fintech teams. It keeps Unit21 or whichever platform you choose as the system of record for detection, the case, and the filing, and puts agents on the work around it. The agent reads the alert through the vendor's API, checks processor history, the ledger, and prior tickets, drafts the payout hold, the reserve recommendation, and the RFI response, and waits for approval before money moves. The compliance alert investigations guide walks through it.

• No single vendor to depend on. Agents run in your AWS, GCP, or Azure account or fully self-hosted, on your choice of sandbox provider with fallbacks, using Claude, GPT, Gemini, or open-weight models, with harness routing across Claude Code, Codex, and OpenCode.
• Guardrails you set. Read-only by default, approvals before money moves, RBAC, masked credentials, SSNs and card numbers stripped from prompts and logs, and every run recorded for your sponsor bank or examiner.
• Built for teams. Compliance, risk, payment ops, finance, and support share agents, templates, and one memory of every case.
• An engineer, not an account executive. A forward-deployed AI engineer with a payments background from Hulu's payments team at Disney, Finix, Modern Treasury, or BlackRock builds the first agents with your team.

Turn your SOPs into agentsConnect your tools, even legacy onesKeep a human in the loopNo single vendor to depend onOne memory across teamsEvery run is stored

[::]New agent

Create a banking ops agent that handles RFIs, hold-harmless requests, and returns of funds from our partner bank, verifies against our ledger, and drafts replies for my approval.

Describe the agent you want

Agent ready

bank-ops-agent

Tools picked from your prompt

EmailLedgerSFTPMastercard

Rain saved $750k in vendor and salary spend with Runtime, which it uses across technical support, fraud and risk monitoring, compliance, cybersecurity, engineering investigations, PR reviews, QA testing, and reporting.

For head-to-head detail, see Sardine vs Unit21, Unit21 vs Hummingbird, and the best AI agents for AML alert triage.

How to choose

• Stay on Unit21 if real-time rules, AML monitoring, case management, and direct FinCEN filing are the core of the job, and you already have a KYC vendor.
• Choose Sardine if you want onboarding, fraud, and AML from one vendor, with device intelligence and consortium data.
• Choose Hummingbird if investigations and multi-jurisdiction reporting are the core job and your data lives in a cloud warehouse.
• Choose Flagright if you operate across many countries and need filing to goAML jurisdictions.
• Choose SEON if you want fraud and AML in one product with a published entry price.
• Choose Alloy if you want to orchestrate many identity and risk data providers with credit decisioning.
• Choose Runtime if your AML cases need data outside the compliance stack and touch other teams. It runs alongside any of the above.

Frequently asked questions

What are the best Unit21 alternatives?

Runtime for agents that work AML cases across every payment team, Sardine for fraud, KYC, and AML on one platform, Hummingbird for investigations and reporting, Flagright for multi-jurisdiction filing, SEON for published pricing, and Alloy for identity orchestration.

Which Unit21 alternative publishes pricing?

SEON publishes a Starter plan at $699 per month with 2,500 fraud checks, with AML and case management on its custom Premium plan. Runtime is available by request, with custom pricing, self-hosting, and a free pilot for approved teams. Unit21, Sardine, Hummingbird, Flagright, and Alloy do not publish pricing.

Which Unit21 alternatives file SARs directly?

Hummingbird e-files SARs and CTRs with FinCEN and STRs with FINTRAC, and lists automated reports for several other FIUs. Flagright files SARs to FinCEN and 70+ goAML jurisdictions. SEON lists SAR and STR reporting. Sardine's SAR Generation agent drafts filings. Runtime drafts the narrative and a person files it through your filing system.

Can Runtime replace Unit21?

Not for detection or filing. Runtime does not run monitoring rules, screen sanctions lists, or e-file with FinCEN. It runs agents that investigate and act on the alerts Unit21 raises, using the ledger, processor, and support tickets.

Where does Runtime fit next to Unit21?

Runtime is the AI agent harness for payment and fintech teams. Unit21 detects, opens the case, and files; Runtime agents pick up the parts of the case that need data and actions outside the compliance stack, draft them with evidence, and wait for a person before anything moves money.