Buyer fit
Good fit when
- ✓Large enterprises with an in-house security team and an established EDR, SIEM, and cloud stack that want to automate SOC work without replacing tools
- ✓Organizations consolidating detection, investigation, and response across many tools into one operational layer
- ✓Buyers who want agentic AI automation but insist on human-in-the-loop governance over containment actions
Watch out when
- ×SMBs and lean teams, since enterprise focus and deal sizes put this above typical small-business budgets
- ×Buyers who want turnkey single-vendor EDR plus MDR from one agent, as ReliaQuest brings no proprietary endpoint agent
- ×Teams that need independently validated detection metrics or a breach warranty before committing
Coverage
5 of 6 attack surfaces in the base price; the rest are separately priced.
EDR
SIEM
Cloud
Additional capabilities
Incident response
Pricing
Custom enterprise quote.
Checked Aug 2026
Aggregated across all ReliaQuest purchases, not GreyMatter MDR-specific. Average…
Vendr · 2025
How pricing works+−
ReliaQuest does not publish a price. Contracts are scope and usage based, with reviewers referencing metered billing, and sized for enterprise environments rather than per-endpoint SMB pricing.
Not vendor-published. Third-party buyer data (Vendr) reports an average annual contract around $172,500, ranging up to roughly $1.2M.
Cost caveats
- –Enterprise deal sizes. Third-party buyer data centers around $170K per year, so this is not an SMB-budget service.
- –Metered, usage-based billing means costs scale with data volume and scope. Model the full-scope annual cost, not the entry point.
- –Detection content is built and maintained by ReliaQuest's team rather than self-service, so new coverage depends on their delivery queue.
2 more+−
- –Digital Risk Protection and attack surface modules can be separate line items on top of the core platform.
- –No breach warranty, unlike some enterprise MDR competitors.
What costs extra (4)+−
- –GreyMatter Digital Risk Protection (dark web and brand monitoring)
- –Attack surface management (CAASM)
- –Additional data source and tool integrations
- –Professional services and onboarding beyond standard integration
Warranty conditions+−
No breach or ransomware warranty is publicly documented.
Figures from named sources only (vendor pages, marketplaces, resellers, public procurement records, buyer reports), each dated. Nothing here is our estimate.
Team and access
Certifications
Reputation
Gartner Peer Insights rates ReliaQuest GreyMatter 4.8/5 with 94% willing to recommend, and it earned a Gartner Customers' Choice distinction for MDR (based on 133 reviews). PeerSpot shows 9.6/10 but across only about 2 recent reviews. Almost no Reddit or independent practitioner discussion exists, so sentiment leans on curated review platforms.
What customers praise
- ✓Consolidates and correlates data across existing SIEM and EDR tools into one console, saving analyst hours (G2, PeerSpot reviewers)
- ✓Responsive customer support and hands-on onboarding (G2, PeerSpot reviewers)
- ✓Automation reduces Tier 1 and Tier 2 workload, with one PeerSpot reviewer citing roughly 60% time savings
Common complaints
- ×Price seen as steep or high by multiple G2 and PeerSpot reviewers
- ×Steep learning curve and a UI reviewers say needs work, with some configuration not intuitive (G2, PeerSpot)
- ×One G2 reviewer noted the AI gives a good overview but does not reach the depth of a human analyst
Almost no Reddit or independent practitioner-forum discussion found. Structured reviews concentrate on Gartner Peer Insights and vendor-adjacent platforms, so real-world sentiment beyond curated review sites is hard to gauge.
Questions to ask
- 1.
GreyMatter's 'under 5 minutes to containment' is a vendor figure. What is it measured from, does it require pre-approved automation, and will you commit to it contractually?
- 2.
Which containment actions do your agentic AI personas take autonomously versus routing to us for approval via the mobile app, and how do we set those thresholds?
- 3.
Custom detection content is built by your team. What is the typical turnaround for new detections, and what happens to coverage gaps while requests are in your queue?
- 4.
If we leave, do we keep the custom detections and playbooks built in GreyMatter, or do they stay with you?
- 5.
Your pricing is usage-based. Model our full-scope annual cost including data growth, and clarify what pushes us from the roughly $170K range toward the top of the band.
- 6.
Are Digital Risk Protection, attack surface management, and breach and attack simulation included, or are they separate modules and line items?
- 7.
You have not participated in a public MITRE ATT&CK Evaluation. What independent validation of detection efficacy can you provide?
- 8.
Which of our existing EDR, SIEM, and cloud tools have native bi-directional integrations versus custom API work, and does custom work carry professional-services fees?
Evidence
Sources reviewed
Public-data caveats
- –No public contractual response-time SLA is recorded for this profile.
- –No public breach warranty is recorded.
- –Response authority may depend on pre-approval and contract scope.
- –MDR analyst headcount or analyst-to-customer ratio is not public.
Also consider
Further reading
Independent research. Verify details directly with the provider before making decisions.