Forter vs Sift (2026)
The real choice is whether Forter or your own team owns a bad fraud call. Forter returns an approve or decline on each order, typically with no person reviewing it. Under its chargeback guarantee agreement, Forter pays for fraud on the transactions it approved. It also says its pricing guarantees approval rates, and a second agreement buys the decisions without that cover. Sift puts the controls in your hands. Your team sets the thresholds at which workflows block, accept or queue a user, and it can test a policy on past traffic before going live. Each Sift score arrives with the signals behind it. Forter argues that reason codes let fraudsters reverse engineer its outcomes and shows the data in its portal instead. Sift's terms leave the customer solely responsible for its decisions, so the loss stays with you. Sift does give shoppers a softer path, sending a risky login to email or SMS verification rather than a block. Forter keeps an EU data center in Ireland, while Sift hosts only in two US regions of Google Cloud. Choose Forter to move fraud losses off your books. Choose Sift to tune your own decisions and fight your own chargebacks.
- You want fraud losses off your books. Under Forter's chargeback guarantee agreement, fraud on a transaction Forter approved is Forter's to pay, and a 90 day performance guarantee sits beside it.
- Your team has no time to tune rules. ASICS once reviewed orders by hand against a set of rules, and after it moved to Forter's automated decisions its monthly chargebacks fell 90 percent.
- Returns and account abuse worry you as much as stolen cards. Forter judges logins and returns as well as purchases, and each quote is scoped to the fraud, abuse and account takeover cover you choose.
- You process through Stripe, Checkout.com or Nuvei. Forter lists those payment firms as partners, and Salesforce Commerce Cloud merchants get a ready connector.
- European shoppers' data needs a home in the EU. Since July 2024 Forter's data center in Ireland has kept data and services inside the EU, beside its data centers in the United States.
- Your team wants its hands on the thresholds. Sift workflows block, accept or queue a user for review at levels you set, and a policy can be tested on past traffic before it goes live.
- Your data scientists want a say in the model. Sift trains a custom model on your own fraud labels, and your team can deploy its own models beside Sift's or feed the score into them through the Score API.
- Analysts need to see why. Every Sift score arrives with the signals that drove it, and an analyst can open the network view and transaction activity behind a decision.
- Account takeover is the bigger worry. Account Defense watches logins and sessions and can send a risky login to email or SMS verification instead of a block. Swan Bitcoin cut its loss rate by more than 90 percent with it.
- You would rather fight chargebacks than insure them. Sift Dispute Management builds and sends chargeback responses, taking data from Adyen and PayPal and handling Visa and Mastercard inquiries and alerts.
This comparison is published by AI FinTech Index, an independent research platform that publishes independent ratings of AI vendors for financial services. Forter and Sift are each graded against the same capability taxonomy, from each vendor's own public materials and the regulatory record, under the AI FinTech Index verification standard. No vendor pays for placement, and no vendor has reviewed this page. How this evidence is graded
Plain facts
| Forter | Sift | |
|---|---|---|
| Primary category | Fraud Detection & Transaction Risk | Fraud Detection & Transaction Risk |
| Founded | Not published | 2011 |
| Headquarters | New York, New York, United States | San Francisco, California, United States |
| Website | www.forter.com | sift.com |
Side by Side
Select any grade to read the note behind it.
| Axis | F Forter |
S Sift |
|---|---|---|
| AI Centrality | ||
| Autonomy and Oversight Model | ||
| Model Risk Management and Transparency | ||
| Operational and Outcome Evidence | ||
| AI Safety and Data Stewardship | ||
| GLBA and Data Privacy Posture | ||
| Security Certifications and Trust Center | ||
| Regulatory Status and Licensure | ||
| AI Governance and Bias Disclosure | ||
| AI Liability and Recourse | ||
| Model Supply Chain Disclosure | ||
| Core Systems and Integration Depth | ||
| Deployment Model and Data Residency | ||
| Commercial Transparency | ||
| Institution and Segment Coverage |
Product updates
The latest logged changes from each vendor, newest first, each linked to its source.
Forter
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Product / capability
Forter launched its Agentic Commerce Engine.
Source
Sift
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Product / capability
Sift released Review Agent, which reads a fraud case and gives the analyst color coded risk and trust signals, a short plain language explanation and a suggested action of Block, Accept or Watch.
Source
The short version of each
Forter
Forter judges in milliseconds whether to trust the person or AI agent behind an online purchase, login or return. Retailers, marketplaces and travel brands buy it to approve more good orders and to stop fraud, account takeover and policy abuse. Its models learn from shopper data gathered across its merchant network, data Forter says it never passes from one merchant to another. Merchants sign one of two agreements. With the chargeback guarantee, Forter pays for fraud on the transactions it approved, while the uncovered agreement buys the decisions alone. A quote depends on the cover in scope and on whether every transaction or only a subset runs through Forter. Puma reports a 3.9 percent rise in approvals. Forter's security hub names PCI DSS Level 1 compliance, a SOC 2 Type 2 report and ISO/IEC 27001 and ISO/IEC 27701 certification, each released after an access request. The main caveat is what a merchant can check. Forter publishes no decision thresholds or referral rules, gives no reason codes and shares no accuracy or fairness results.
Source: AI FinTech Index, 2026
Sift
Sift is a San Francisco fraud decisioning company that scores every event a digital business sends, from sign up and login to payment and dispute, in under 150 milliseconds. More than 700 brands use it, from Hertz and Yelp to fintechs such as Remitly. Payment Protection screens card fraud, and Account Defense guards logins against takeover and fake accounts. The customer sets the thresholds and keeps the decision. Scores blend a global model trained across Sift's network with a custom model trained on the customer's own labels, and each one lists the signals behind it. Sift publishes its data protection addendum, which names 21 subprocessors and keeps end user data for four years. The service runs on Google Cloud in two US regions. Sift holds ISO 27001:2022 certification and a SOC 2 Type II report, released on request. The main caveat is the loss. Sift's terms provide the service as is, promise no accurate results and make the customer solely responsible for its decisions, with liability capped at the fees paid in the prior twelve months.
Source: AI FinTech Index, 2026
Common questions
What is the difference between Forter and Sift?
Forter and Sift both score online purchases and logins in real time, and both learn from data pooled across many businesses. They split on who decides and who pays. Forter returns an approve or decline recommendation on each order, typically with no person reviewing it, and under its chargeback guarantee agreement it pays for fraud on the orders it approved. Sift returns a score with its reasons, and the customer's own workflows and analysts act on it, so the customer keeps both the decision and the loss. Forter's merchants are retailers, marketplaces and travel brands. Sift serves marketplaces, travel firms and restaurant brands as well as fintechs. Its fintech page centers on account takeover, fake signups and unauthorized transfers at neobanks, crypto exchanges and digital wallets. Graded by AI FinTech Index against the same capability axes from each vendor's own published materials, verified November 5, 2026. No vendor pays for placement.
How do Forter and Sift price their services?
Neither Forter nor Sift publishes a rate card. Forter quotes each merchant under one of two agreements, one carrying a chargeback guarantee and one covering the decisions alone. The quote turns on the fraud, abuse and account takeover cover in scope and on whether every transaction or only a subset is decisioned. Forter offers a return on investment calculator in place of a price. Sift's one public figure sits on its AWS Marketplace listing for Sift Platform Dispute Management, at $10,000 per contract unit for 12 months. The listing does not say what a unit covers, so the number of units is sized with Sift. Custom pricing runs through private offers. Graded by AI FinTech Index against the same capability axes from each vendor's own published materials, verified November 5, 2026. No vendor pays for placement.
Who carries the loss when Forter or Sift gets an order wrong?
With Forter, it depends on the agreement. Under the chargeback guarantee agreement, Forter pays for fraud on the transactions it approved, and it says its pricing guarantees approval rates as well. The uncovered agreement buys the decisions without that cover. The AI FinTech Index contrasts Forter's cover with Sift's terms of service, which provide the service as is, promise no accurate results and make the customer solely responsible for its decisions. Sift's liability is capped at the fees paid in the prior twelve months. Sift does give the shopper more of a route. A risky login can go to email or SMS verification instead of a block, and end users can ask Sift for a human review of its automated decisions, though a decision a business made with Sift goes back to that business. A shopper Forter declines is pointed back to the merchant, while residents of the European Economic Area, the UK and Switzerland can ask Forter about its automated decisions.
Who tunes the decisions in Forter and Sift, and how is each one explained?
Sift leaves the tuning to the customer. A team sets the thresholds at which workflows block, accept or queue a user, and it can simulate a policy on past traffic before it goes live. Each decision records its source and the analyst who made it. Teams can run their own models beside Sift's, and Sift Professional Services sells model tuning and labeling help. Every Sift score lists the signals that drove it, and the Review Agent explains its suggested decisions in plain language. Forter tunes its own models and describes no thresholds or referral rules for a merchant to set. It argues that reason codes let fraudsters reverse engineer its decisions. Teams instead open the data behind any decision in the Forter portal, and an AI copilot called Prism helps them investigate. Graded by AI FinTech Index against the same capability axes from each vendor's own published materials, verified November 5, 2026. No vendor pays for placement.
Where do Forter and Sift run, and which payment and commerce platforms do they connect to?
Forter stores data in its United States data centers and in an EU data center in Ireland, and Forter Ltd in Israel and affiliates in the UK and Singapore may also process it. Forter names no hosting provider and publishes no subprocessor list. Merchants connect through JavaScript, mobile SDKs or a direct API, and Forter's partners include Stripe, Checkout.com and Nuvei. Sift runs on Google Cloud in two US regions, with Dispute Management on Amazon Web Services in Oregon, and has no data centers outside the United States. Its public API takes events from sign up to dispute, with client libraries in five languages. Sift's dispute product takes data from Adyen and PayPal. On security, Forter names PCI DSS Level 1 compliance, while Sift names ISO 27001:2022 and SOC 2 Type II but no PCI DSS certification. Graded by AI FinTech Index against the same capability axes from each vendor's own published materials, verified November 5, 2026. No vendor pays for placement.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers. The full set for this category is on the Fraud Detection & Transaction Risk page.
Neither Forter nor Sift publishes an accuracy or false decline rate, a validation report or fairness results by group of shoppers. Their customer results, from ASICS at Forter to Swan Bitcoin at Sift, state no measurement period or method. Sift keeps its models in a central registry with monthly reviews, and Forter places a Responsible AI Oversight Committee over its models, yet neither shares what that oversight has measured.
Both train on shopper data pooled across customers, and neither describes a way to opt out. Neither states a regulatory position beyond Europe's payment authentication rules. Three questions for Forter belong in writing. Which merchants' data stays in the Ireland data center, which providers and subprocessors handle shopper data and for how long, and what does the 90 day performance guarantee promise?
Sift owes written answers on what one AWS Marketplace unit buys, whether it acts as controller or processor under its addendum, and how its pooled global model fits a trust center answer saying it will not train models on customer inputs.