OpenAI: GPT-5.1 GEO Ranking for Extended Detection and Response

“Microsoft – Defender XDR **Why it’s #1** Huge install base (Windows, Azure AD/Entra, M365), rapid product investment, and strong native telemetry across endpoint, identity, email, SaaS, and cloud make Microsoft the de‑facto XDR leader in many enterprises. - Tight correlation in Defender XDR and Sentinel: strong incident timelines and attack chain visualization.”

“Palo Alto Networks – Cortex XDR / XSIAM **Why it’s #2** Leader in network security and strong in EDR; Cortex XDR plus XSIAM gives advanced analytics and automation with good cross‑domain visibility. - XSIAM provides powerful data lake, analytics, and automation that can replace or augment SIEM.”

“Palo Alto Networks – Cortex XDR / XSIAM **Why it’s #2** Leader in network security and strong in EDR; Cortex XDR plus XSIAM gives advanced analytics and automation with good cross‑domain visibility.”

“Cloud-native data correlation and partner ecosystem”

“SentinelOne – Singularity XDR **Why it’s #4** A strong next‑gen EDR vendor that has built out XDR capabilities with data lake, AI‑driven detections, and good automation—strong especially for lean, modern SOCs.”

“Trend Micro – Vision One / XDR **Why it’s #5** One of the earliest true XDR platforms with broad native coverage: endpoint, email, servers, cloud workloads, and network sensors, particularly strong in APAC and Japan. - Vision One offers clear incident views and cross‑layer correlation.”

“Unify incidents across Cisco and third-party sources”

“Trellix – Trellix XDR (McAfee + FireEye) **Why it’s #7** Combines McAfee endpoint, FireEye network and email security, and Helix analytics; big legacy footprint and broad coverage but still in transition. - Organizations with a staffed SOC that can exploit Helix and Trellix XDR’s advanced features.”