Microsoft Security Copilot Phishing Triage Agent (Defender) vs SentinelOne Purple AI (agentic AI security analyst)
Microsoft Security Copilot Phishing Triage Agent (Defender) (Microsoft) and SentinelOne Purple AI (agentic AI security analyst) (SentinelOne) are both listed in the Security category of Agent Index. They share no framework tags in our dataset. Only SentinelOne Purple AI (agentic AI security analyst) is tagged for FedRAMP, GovRAMP, TX-RAMP.
| Field |  Microsoft Security Copilot Phishing Triage Agent (Defender) |  SentinelOne Purple AI (agentic AI security analyst) |
|---|---|---|
| Vendor | Microsoft | SentinelOne |
| HQ | United States · North America | United States · North America |
| Primary category | Security | Security |
| Also listed in | Security | Security, Compliance |
| Summary | Security Copilot agent in Microsoft Defender that autonomously triages user-reported phishing, resolves false positives and explains each verdict. | Agentic AI security analyst in the Singularity platform that runs alert investigations to a verdict and, with Singularity Hyperautomation, triggers response within pre-approved policies; SentinelOne says Purple AI is FedRAMP High authorized. |
| Framework tags (Agent Index) | — | FedRAMP, GovRAMP, TX-RAMP |
| Frameworks (vendor-claimed) | — | FedRAMP, GovRAMP, TX-RAMP |
| FedRAMP (Marketplace, listing scope) | — | SentinelOne Singularity Platform High · FedRAMP Authorized · FR1919071020A · High · authorized 2024-09-10 |
| Capabilities / tasks | security operations, alert triage, incident response, threat detection | security operations, alert triage, case investigation, threat detection, government compliance |
| Pricing (as published) | No standalone price. Requires Microsoft Defender for Office 365 Plan 2 plus Security Copilot security compute units (SCUs). Microsoft says Security Copilot agents are also made available to Microsoft 365 E5 customers. Check Microsoft's Security Copilot pricing for SCU rates. | Purple AI pricing not published; Singularity platform tiers listed from $179.99 per endpoint/year (Complete) and $229.99 (Commercial) on sentinelone.com/pricing. |
| Pricing model | quote | quote |
| Primary source | https://learn.microsoft.com/en-us/defender-xdr/phishing-triage-agent | https://www.sentinelone.com/platform/purple/ |
| Last checked | 2026-10-18 | 2026-10-18 |
| Official site | https://learn.microsoft.com/en-us/defender-xdr/phishing-triage-agent | https://www.sentinelone.com/platform/purple/ |
Side-by-side data is generated from the open dataset. “Vendor-claimed” frameworks are as marketed by each vendor and not verified by Agent Index; framework tags indicate relevance, not certification. Request current quotes from each vendor before buying. This page does not rank or score vendors. Sponsored comparisons, if any, will be labelled.
Also in this use case
Other verified listings that share a task tag or use-case group with Microsoft Security Copilot Phishing Triage Agent (Defender) or SentinelOne Purple AI (agentic AI security analyst). Open a pair page or the use-case table — this is not a ranking.
- Attic IVON (Agentic MDR for Microsoft 365) — Dutch AI SOC agent for Microsoft 365 SMBs that triages, investigates and contains identity alerts across Defender, Sentinel and Entra ID with human sign-off. · Attic IVON (Agentic MDR for Microsoft 365) pair comparison
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- Cav Compliance OS agents (formerly Caveonix) — Agentic cyber assurance and continuous compliance platform whose AI agents collect evidence, test controls, find gaps against 50+ frameworks (FISMA, NIST 800-53, FedRAMP, CMMC) and generate ATO artifacts; the platform is FedRAMP High authorized.
- Datadog Bits AI Security Analyst — AI agent in Datadog Cloud SIEM that autonomously investigates security signals and returns evidence-backed Benign or Suspicious verdicts. · Datadog Bits AI Security Analyst pair comparison
- Dotfile Autonomy (KYB/AML review agents) — Specialised AI agents that pre-investigate KYB cases end to end (documents, UBOs, AML screening hits, online reputation), auto-approve routine cases under the customer's policy and escalate edge cases with a full audit trail.
- Google Security Operations Triage and Investigation Agent — AI agent in Google Security Operations that autonomously investigates SIEM alerts and returns a verdict, confidence score, timeline and next steps. · Google Security Operations Triage and Investigation Agent pair comparison
- IBM watsonx Orchestrate (incl. watsonx Orchestrate for Government) — IBM's agent platform to build, deploy, orchestrate and govern AI agents (IBM, custom and partner agents for HR, procurement and other domains); watsonx Orchestrate for Government is in scope of IBM Data Services for Government, FedRAMP Moderate.
- KnowBe4 AIDA (AI Defense Agents) — Suite of AI agents for human risk management that automatically generate and deliver personalised phishing simulations, training, remedial and policy-quiz content per user; the FedRAMP Moderate KnowBe4 Platform covers AIDA (except AIDA Deepfakes). · KnowBe4 AIDA (AI Defense Agents) pair comparison
- Reliance Cyber RADAR — UK agentic MDR platform on Google Security Operations with specialist AI agents for detection engineering, triage, response and self-healing, under human oversight. · Reliance Cyber RADAR pair comparison
- SymphonyAI SRI Agents (Symphony Risk Intelligence) — Financial-crime agents on SymphonyAI's agent-native Symphony Risk Intelligence platform: manager and specialist agents that prepare TM and screening investigations, enrich watchlist records, track threat and regulatory intelligence, and run KYC/EDD workflows.
- WedgeX AI SOC Agent — Australian AI SOC agent that enriches, investigates and recommends escalate/close actions on alerts, proposing containment for human approval. · WedgeX AI SOC Agent pair comparison
Use-case comparisons
- AI SOC and security-analyst agents — 26 listings (Security operations, alert investigation and threat detection)
- US public-sector and FedRAMP AI agents — 19 listings (US government, FedRAMP and public-sector compliance or security operations)
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