Sift

Machine-learning fraud prevention for payments, logins and signups

Contact for pricing sift.com

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Pricing

Contact for pricing

API

Yes

Platforms

WebAPI

What is Sift?

Sift is a fraud prevention platform that uses machine learning to separate legitimate customers from fraudsters in real time. It covers payment fraud, account takeover, fake account creation and account abuse across the customer journey, from signup and login through transactions and chargeback prevention.

Sift draws on a global data network that processes more than 1 trillion events a year across 700+ brands. A user who is new to one business may already be known to Sift. Sift calls its approach "clearbox": teams can see the signals, models and workflows behind each decision. Automation handles low-risk decisions and routes cases to analysts. AI agents, including an Attack Detection Agent, flag anomalies such as transaction velocity spikes.

Sift is aimed at fraud and trust & safety teams in SaaS, e-commerce, marketplaces, iGaming, food delivery, travel and fintech. Developers can bring Sift's scores into their own risk models through the Sift Score API.

Key features

Real-time payment fraud decisions
Account takeover detection and blocking
Fake account signup prevention
Attack Detection Agent for anomaly alerts
Global network data from 1T+ annual events
Automated review routing and workflows
Sift Score API for custom risk models
Expert fraud strategy services

Use cases

Who it's for

Fraud operations teamsTrust & safety managersE-commerce and marketplace businessesFintech and iGaming companiesDevelopers building risk models

E-commerce checkout protection

Approve more legitimate orders and decline fraudulent ones in real time, without adding friction at checkout.

Stopping account takeover

Block unauthorized logins before they lead to revenue loss or harm to customers.

Marketplace and signup abuse

Stop fake account creation, fake listings and seller abuse when they first appear.

Small fraud teams

Automate low-risk decisions so a few analysts can focus on high-priority cases.

Sift pricing

From the vendor's site, checked Oct 26, 2026; we re-check prices monthly. Prices change — confirm on their pricing page.

Pricing is by quote: contact the vendor.

How Sift compares

Sift has no free plan, while 1 of the 4 alternatives below has one.

Tool	Starts at	Free plan	Free trial	API	Open source
SSift	Quote	—	—		—
RResemble AI	$280/mo	—	—		—	Sift vs Resemble AI
RReality Defender	—		—		—	Sift vs Reality Defender
SSEON	$699/mo	—			—	Sift vs SEON
IIBM watsonx.governance	$3500/mo	—		—	—	Sift vs IBM watsonx.governance

The closest alternatives in our directory by category. “Starts at” is the cheapest paid plan per month, as each vendor lists it.

Sift data and privacy

Trains AI on your content

Not stated

Data retention

Kept while legitimate business need exists; then deleted or anonymized

“After expiration of the applicable retention periods, we will either delete or anonymize your personal information”

Where data is stored

“our facilities are located in the United States”

Security and compliance

None stated

From Sift's own privacy and security pages , checked Oct 28, 2026. We only show what the vendor states in writing; “not stated” means the pages don't say.