Sentinel vs Sift
Sift is an enterprise fraud platform used by large companies like Airbnb and Twitter. Its ML-based scoring is powerful for account takeover and payment fraud at scale — but it's expensive, slow to integrate, and does not detect antidetect browsers or residential proxy networks. For most teams, the cost and complexity are hard to justify.
Sentinel vs Sift — Side by Side
| Feature | Sentinel | Sift |
|---|---|---|
| Response Latency | < 40ms | ~300ms |
| Residential Proxy Detection | ✓ Full | ✗ None |
| Antidetect Browser Detection | ✓ Full | ✗ None |
| Agentic AI Bot Detection | ✓ Full | ✗ None |
| No CAPTCHA Required | ✓ Yes | ✗ No |
| Free Tier | ✓ 1,000 req/hr unlimited | ✗ None |
| IoT / Hijacked Device Detection | ✓ Yes | ✗ No |
| Transparent Pricing | ✓ Yes | ✗ No |
| Client-Side SDK | ✓ Yes | ✓ Yes |
| Cross-Business Network Signals | — | ✓ Yes |
| Chargeback Management | — | ✓ Yes |
What is Sift?
Sift is a San Francisco-based trust and safety platform offering ML-powered fraud scoring for account takeover, payment fraud, and content abuse. It targets large enterprises with dedicated fraud operations teams.
Sift Strengths
- Strong ML models for account takeover
- Large customer network for cross-business signals
- Chargeback dispute management
- Good for enterprise-scale payment fraud
- Client-side JavaScript snippet
Sift Weaknesses
- Enterprise pricing — no public rates, very expensive
- No free tier
- No antidetect browser detection
- No residential proxy detection
- ~300ms response latency
- Long implementation timelines
- Overkill for most startups and SMBs
Pricing
Enterprise only. No public pricing. Typically $25,000+/year. No free tier.
When to use Sift, when to use Sentinel
Use Sift if...
- Large enterprises with dedicated fraud ops teams and six-figure fraud prevention budgets.
Use Sentinel if...
- Your attackers use residential proxies or antidetect browsers
- You need detection in under 40ms without slowing down your product
- You want to start free with no credit card
- You need CAPTCHA-free bot detection
- Sift's cost and complexity make it inaccessible for most teams. And despite the price, it still misses antidetect browsers and residential proxies — the evasion methods your attackers are using right now.
Get started with Sentinel — free
1,000 API requests per hour. No credit card. No CAPTCHA. Detects what Sift misses.
Frequently Asked Questions
Is there a cheaper alternative to Sift?
Yes. Sentinel is free to start with 1,000 API requests per hour. Sift requires enterprise contracts typically starting at $25,000/year. For device intelligence and bot detection, Sentinel delivers comparable coverage at a fraction of the cost.
Does Sentinel work for account takeover prevention?
Yes. Sentinel detects the tools attackers use for account takeovers — credential stuffing bots, antidetect browsers, and residential proxies. It flags suspicious sessions before login attempts succeed, without requiring CAPTCHAs.
What does Sift miss that Sentinel catches?
Sift does not detect antidetect browsers or residential proxy networks. These are the primary tools used in modern account takeover attacks. Sentinel specifically targets these evasion techniques.
Can a small company use Sentinel instead of Sift?
Yes. Sentinel was designed to be developer-friendly and accessible. Free tier, instant API key, no sales call required. Sift is built for large enterprises with dedicated fraud operations teams.