Cybersecurity · head to head
Microsoft Sentinel vs Silent Eight
Silent Eight
Cybersecurity
AI adjudication of sanctions screening and AML alerts
- From
- On request
- Rated
- -
The short version
- Only Microsoft Sentinel has a free tier, so it costs nothing to try first.
- Each has a real cost: Microsoft Sentinel billing is driven by the volume of log data ingested per day, so cost scales with log noise rather than with users or protected assets; Silent Eight automated disposition has to clear model risk governance and a regulator, and the shadow running period before auto-close is permitted can consume most of the first year of the contract.
- They diverge on capability: Microsoft Sentinel covers AI-powered analytics, Silent Eight covers Alert adjudication.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Microsoft Sentinel and Silent Eight actually diverge.
| Attribute | Microsoft Sentinel | Silent Eight |
|---|---|---|
| Starting price | Free | On request |
| Pricing model | usage-based | quote |
| Free tier | Yes | No |
| Platforms | Web, Api | Web, Linux |
| Founded | 1975 | Unknown |
Identical on both: user rating (Not yet rated), category (Cybersecurity).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Microsoft Sentinel
- AI-powered analytics
- Fusion detection
- UEBA
- Automated response playbooks
- Threat intelligence
- Hunting queries
- Workbooks
- Incident management
Only in Silent Eight
- Alert adjudication
- Narrative generation
- Name screening automation
- Quality assurance
- Shadow mode
- Model transparency reporting
What people use each for
The jobs each tool is most often brought in to do.
Microsoft Sentinel
- Cloud-based security information and event management (SIEM)not Silent Eight
- Extended detection and response (XDR) across enterprise infrastructurenot Silent Eight
- Data ingestion and long-term security analyticsnot Silent Eight
Silent Eight
- A bank whose level one screening team spends most of its time closing obvious false name matchesnot Microsoft Sentinel
- A payments institution with alert volumes growing faster than it can recruit and train analystsnot Microsoft Sentinel
- A compliance function asked by a regulator to demonstrate consistency of alert decisions across offshore teamsnot Microsoft Sentinel
- An institution that has just tightened screening thresholds after an enforcement action and cannot staff the resulting alert increasenot Microsoft Sentinel
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Microsoft Sentinel
- Billing is driven by the volume of log data ingested per day, so cost scales with log noise rather than with users or protected assets
- Commitment tier discounts require reserving daily ingestion capacity in advance, and a tier cannot be downgraded until 31 days have passed
- Commitment tiers start at 100 GB per day, above what smaller estates ingest
- Charges for Log Analytics, Logic Apps and Machine Learning are billed separately on top of Sentinel itself
- The free allowance is only up to 5 MB per user per day for selected Microsoft 365 security logs
- Promotional commitment pricing is time limited and locks in only until a stated end date
Silent Eight
- Automated disposition has to clear model risk governance and a regulator, and the shadow running period before auto-close is permitted can consume most of the first year of the contract.
- It does not improve detection, so an institution with a poorly tuned monitoring system automates the handling of bad alerts rather than fixing why they exist.
- Pricing is tied to alert volume, which means efficiency gains elsewhere that reduce alerts also reduce the vendor bill in a way sales teams structure minimums against.
- The headcount saving is only realised if the institution actually reduces the analyst pool, and many banks redeploy rather than cut, leaving the business case unrealised on paper.
- As a mid-sized private vendor serving tier one banks, concentration risk cuts both ways; the loss of one large client materially affects the company, and buyers should ask about financial stability during diligence.
Pricing, plan by plan
Microsoft Sentinel
Free- Pay-As-You-Go$2.46/day
- Per GB ingested
- 90-day retention
- First 31 days free for new workspaces
- Commitment TiersFree
- 100GB to 50TB tiers
- Up to 65% discount
- Predictable billing
- Microsoft 365 E5Free
- Free data ingestion for M365 logs
- Bundled with E5 license
Silent Eight
On request- Iris$undefined/year
- Priced by alert volume adjudicated
- Deploys against existing screening and monitoring systems
- Shadow mode evaluation period
Which should you pick?
Choose Microsoft Sentinel if
- You need ai-powered analytics.
- You want to start without paying.
- You work on Web, Api.
- You also want fusion detection.
Choose Silent Eight if
- You need alert adjudication.
- You work on Web, Linux.
- You also want narrative generation.
Questions people ask
- Is Microsoft Sentinel or Silent Eight better?
- Neither clearly leads. Microsoft Sentinel starts at Free and Silent Eight at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Microsoft Sentinel or Silent Eight?
- Microsoft Sentinel has a free tier; the other does not. Paid plans start at Free for Microsoft Sentinel and On request for Silent Eight.
- Does Microsoft Sentinel or Silent Eight run on more platforms?
- Microsoft Sentinel runs on Web, Api. Silent Eight runs on Web, Linux.
- Can I use Microsoft Sentinel for free?
- Yes. Microsoft Sentinel has a free tier, so you can try it without paying. Silent Eight starts at On request.
- What is Microsoft Sentinel best used for?
- Microsoft Sentinel is most often used for cloud-based security information and event management (siem), extended detection and response (xdr) across enterprise infrastructure, data ingestion and long-term security analytics. Of those, cloud-based security information and event management (siem) and extended detection and response (xdr) across enterprise infrastructure are not what Silent Eight is typically brought in for.
- What can Microsoft Sentinel do that Silent Eight cannot?
- Microsoft Sentinel covers AI-powered analytics, Fusion detection, UEBA, Automated response playbooks. Silent Eight covers Alert adjudication, Narrative generation, Name screening automation, Quality assurance.
Answered from the vendors’ own pages
Microsoft Sentinel: How is Microsoft Sentinel pricing calculated?
Microsoft Sentinel uses a pay-as-you-go usage-based model where you pay only for data ingested, stored, and consumed. Flexible commitment tiers are available to reduce total cost of ownership, with specific rates not published on the public pricing page. Source: https://www.microsoft.com/security/business/siem-and-xdr/microsoft-sentinel/
SourceSilent Eight: Does Silent Eight replace our screening system?
No. It consumes alerts from your existing screening and monitoring systems and decides them. The detection layer stays where it is.
Microsoft Sentinel: Does Microsoft Sentinel require an Azure subscription?
Yes, Microsoft Sentinel requires a Microsoft Azure subscription to operate. Pricing is handled through Azure and varies based on data consumption and the commitment tier you select. Source: https://www.microsoft.com/security/business/siem-and-xdr/microsoft-sentinel/
SourceSilent Eight: Will a regulator accept AI closing alerts?
It depends on your jurisdiction and your model governance evidence. Banks typically run extended shadow mode first and phase auto-closure by alert type.
Silent Eight: Where is the company based?
Singapore, with offices in New York, London and Warsaw.
Related pages
More on Microsoft Sentinel
More on Silent Eight
Other head to heads
- Microsoft Sentinel vs Bitdefender Total Security
- Microsoft Sentinel vs Norton 360
- Microsoft Sentinel vs 1Password
- Microsoft Sentinel vs LastPass
- Microsoft Sentinel vs LogRhythm SIEM
- Microsoft Sentinel vs IBM QRadar
- Microsoft Sentinel vs CrowdStrike Falcon
- Microsoft Sentinel vs Splunk Enterprise Security
- Microsoft Sentinel vs SentinelOne Singularity
- Microsoft Sentinel vs Legit Security
- Microsoft Sentinel vs Sysdig
- Microsoft Sentinel vs Endor Labs
- Microsoft Sentinel vs Proton Mail
- Microsoft Sentinel vs Veriff
- Microsoft Sentinel vs Brave Browser
- Microsoft Sentinel vs March Networks
- Microsoft Sentinel vs Salient CompleteView
- Microsoft Sentinel vs Sumsub
- Microsoft Sentinel vs NICE Actimize
- Microsoft Sentinel vs Quantexa
- Microsoft Sentinel vs ThetaRay
- Microsoft Sentinel vs Feedzai
- Microsoft Sentinel vs Jumio
- Microsoft Sentinel vs iDenfy
- Microsoft Sentinel vs Featurespace ARIC Risk Hub
- Microsoft Sentinel vs Sardine
- Microsoft Sentinel vs Camio
- Microsoft Sentinel vs Unit21
- Microsoft Sentinel vs Shufti Pro
- Microsoft Sentinel vs NordPass
- Microsoft Sentinel vs One Identity
- Microsoft Sentinel vs Ory Kratos
- Microsoft Sentinel vs OWASP ZAP
- Microsoft Sentinel vs Palo Alto Networks Prisma Cloud
- Microsoft Sentinel vs Passbolt
- Silent Eight vs Bitdefender Total Security
- Silent Eight vs Norton 360
- Silent Eight vs 1Password
- Silent Eight vs LastPass
- Silent Eight vs LogRhythm SIEM
- Silent Eight vs IBM QRadar
- Silent Eight vs CrowdStrike Falcon
- Silent Eight vs Splunk Enterprise Security
- Silent Eight vs SentinelOne Singularity
- Silent Eight vs Legit Security
- Silent Eight vs Sysdig
- Silent Eight vs Endor Labs
- Silent Eight vs Proton Mail
- Silent Eight vs Veriff
- Silent Eight vs Brave Browser
- Silent Eight vs March Networks
- Silent Eight vs Salient CompleteView
- Silent Eight vs Sumsub
- Silent Eight vs NICE Actimize
- Silent Eight vs Quantexa
- Silent Eight vs ThetaRay
- Silent Eight vs Feedzai
- Silent Eight vs Jumio
- Silent Eight vs iDenfy
- Silent Eight vs Featurespace ARIC Risk Hub
- Silent Eight vs Sardine
- Silent Eight vs Camio
- Silent Eight vs Unit21
- Silent Eight vs Shufti Pro
- Silent Eight vs NordPass
- Silent Eight vs One Identity
- Silent Eight vs Ory Kratos
- Silent Eight vs OWASP ZAP
- Silent Eight vs Palo Alto Networks Prisma Cloud
- Silent Eight vs Passbolt