# Palo Alto Networks Cortex XSIAM vs ReliaQuest GreyMatter: side-by-side comparison (2026) [Palo Alto Networks Cortex XSIAM](https://cybersectools.com/tools/palo-alto-networks-cortex-xsiam) is a commercial [extended detection and response](https://cybersectools.com/categories/xdr) solution by [Palo Alto Networks](https://cybersectools.com/companies/palo-alto-networks). [ReliaQuest GreyMatter](https://cybersectools.com/tools/reliaquest-greymatter) is a commercial [extended detection and response](https://cybersectools.com/categories/xdr) solution by [ReliaQuest](https://cybersectools.com/companies/reliaquest). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Palo Alto Networks Cortex XSIAM | ReliaQuest GreyMatter | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Extended Detection and Response | Extended Detection and Response | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Palo Alto Networks | ReliaQuest | | Headquarters | – | – | ### Use cases and capabilities | | Palo Alto Networks Cortex XSIAM | ReliaQuest GreyMatter | |---|---|---| | MITRE ATT&CK | Yes | – | | NDR | Yes | – | | Security Orchestration | – | Yes | ### Core features **Palo Alto Networks Cortex XSIAM** 10 features listed. Sign in on the page to see them. **ReliaQuest GreyMatter** 10 features listed. Sign in on the page to see them. ### Integrations **Palo Alto Networks Cortex XSIAM** No integrations listed. **ReliaQuest GreyMatter** 34 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [ReliaQuest GreyMatter](https://cybersectools.com/tools/reliaquest-greymatter) fits if you are a small business. ## Palo Alto Networks Cortex XSIAM vs ReliaQuest GreyMatter FAQ Common questions when comparing Palo Alto Networks Cortex XSIAM vs ReliaQuest GreyMatter for extended detection and response. ### What is the difference between Palo Alto Networks Cortex XSIAM and ReliaQuest GreyMatter? **Palo Alto Networks Cortex XSIAM**: AI-driven SOC platform combining SIEM, SOAR, EDR, NDR, and CDR capabilities. Built by Palo Alto Networks. **ReliaQuest GreyMatter**: Agentic AI security operations platform for autonomous threat investigation. Built by ReliaQuest. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Palo Alto Networks Cortex XSIAM and ReliaQuest GreyMatter? **Palo Alto Networks Cortex XSIAM** is made by Palo Alto Networks. **ReliaQuest GreyMatter** is made by ReliaQuest. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Palo Alto Networks Cortex XSIAM a good alternative to ReliaQuest GreyMatter? Often, yes. Palo Alto Networks Cortex XSIAM and ReliaQuest GreyMatter are both Extended Detection and Response products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Palo Alto Networks Cortex XSIAM vs ThreatDefence SecOps Platform](https://cybersectools.com/compare/palo-alto-networks-cortex-xsiam-vs-threatdefence-secops-platform) - [Palo Alto Networks Cortex XSIAM vs Lumu SecOps Platform](https://cybersectools.com/compare/lumu-technologies-platform-vs-palo-alto-networks-cortex-xsiam) - [Palo Alto Networks Cortex XSIAM vs Fidelis Security](https://cybersectools.com/compare/fidelis-security-vs-palo-alto-networks-cortex-xsiam) - [ReliaQuest GreyMatter vs ThreatDefence SecOps Platform](https://cybersectools.com/compare/reliaquest-greymatter-vs-threatdefence-secops-platform) - [ReliaQuest GreyMatter vs Lumu SecOps Platform](https://cybersectools.com/compare/lumu-technologies-platform-vs-reliaquest-greymatter) - [ReliaQuest GreyMatter vs Fidelis Security](https://cybersectools.com/compare/fidelis-security-vs-reliaquest-greymatter) ## Alternatives to each - [See all Palo Alto Networks Cortex XSIAM alternatives](https://cybersectools.com/alternatives/palo-alto-networks-cortex-xsiam) - [See all ReliaQuest GreyMatter alternatives](https://cybersectools.com/alternatives/reliaquest-greymatter) --- Source: https://cybersectools.com/compare/palo-alto-networks-cortex-xsiam-vs-reliaquest-greymatter For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/palo-alto-networks-cortex-xsiam.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Palo Alto Networks Cortex XSIAM and ReliaQuest GreyMatter: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md