ReliaQuest vs SentinelOne: MDR Comparison 2026
ReliaQuest (Pure-play MDR) and SentinelOne (EDR vendor) take different approaches to managed detection and response. ReliaQuest works with your existing tools, while SentinelOne requires its own security platform. ReliaQuest targets Mid-market and Enterprise organizations; SentinelOne focuses on Mid-market and Enterprise. ReliaQuest includes 6 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity, Network, OT/ICS), compared to 3 for SentinelOne (Endpoint, Cloud, Identity).
Key Differences at a Glance
Winner by Category
ReliaQuest vs SentinelOne: Which Should You Choose?
Choose ReliaQuest if:
- •Large enterprises with complex multi-vendor security stacks
- •Organizations wanting to keep existing SIEM/EDR investments
- •Security teams needing AI-driven automation at scale
- •You need SaaS and Network and OT/ICS coverage included in base pricing
- •You want direct Slack integration with your SOC
Choose SentinelOne if:
- •Organizations already running SentinelOne Singularity wanting platform-native MDR without adding another vendor
- •Mid-market and enterprise organizations wanting $1M breach response warranty as financial backstop
- •Organizations valuing AI-first detection with Purple AI and Google Threat Intelligence integration
- •Breach warranty matters to you (SentinelOne offers one, ReliaQuest does not)
Bottom line: SentinelOne is the choice if you want a single-vendor stack with deep integration. ReliaQuest is better if you have existing tools and want flexibility.
Frequently Asked Questions
What is the main difference between ReliaQuest and SentinelOne?
ReliaQuest is a Pure-play MDR that is technology-agnostic (works with your existing tools). SentinelOne is an EDR vendor that is platform-native (requires their own security stack). SLA commitments differ: ReliaQuest offers ≤15 minutes, SentinelOne offers ≤1 hour. ReliaQuest covers 6 attack surfaces in base pricing vs. 3 for SentinelOne.
How do ReliaQuest and SentinelOne differ in response capabilities?
ReliaQuest supports 6 autonomous actions (endpoint isolation, process termination, network containment, account disable, file quarantine, custom playbooks) and approval is configurable. SentinelOne supports 5 autonomous actions (endpoint isolation, process termination, network containment, file quarantine, custom playbooks) and approval is configurable. Incident response is included with ReliaQuest and not included with SentinelOne.
How does ReliaQuest pricing compare to SentinelOne?
ReliaQuest pricing: $172,500 average annual; up to $1,200,000 for large deployments. $5,000 per additional integrated technology.. SentinelOne pricing: MDR add-on: ~$17-35/endpoint/year (standard) or ~$35-50/endpoint/year (Pro/Elite). Total: ~$197-280/endpoint/year for platform + MDR. Example: 1,000 endpoints x $35 MDR x 5 years = ~$175K MDR add-on cost.. Watch for with ReliaQuest: High minimum contract value (enterprise-focused); Additional technology integrations add cost quickly. Watch for with SentinelOne: Platform license ($69.99-$229.99/endpoint/year) is required BEFORE MDR — significant prerequisite cost; MDR pricing is a bolt-on fee separate from platform licensing — not shown on public pricing page.
Should I choose ReliaQuest or SentinelOne?
Choose ReliaQuest if: large enterprises with complex multi-vendor security stacks. Choose SentinelOne if: organizations already running SentinelOne Singularity wanting platform-native MDR without adding another vendor. ReliaQuest is not ideal for sMBs with limited security budgets. SentinelOne is not ideal for organizations running CrowdStrike, Microsoft Defender, or any non-SentinelOne EDR — platform-native lock-in.