Microsoft Copilot embeds frontier models into the tools knowledge workers already live in: Word, Excel, Outlook, Teams, Windows and Edge. For organizations standardized on Microsoft 365 it is the lowest-friction path to org-wide AI, with enterprise-grade tenant isolation, compliance and admin controls.
LLMs & AssistantsFreemiumMatureFrom Free / $30 per user per month (M365)
Microsoft 365TeamsWindowsGitHubPower PlatformAzure AD / Entra
Strengths
＋Deep integration across the Microsoft stack
＋Enterprise security, compliance and admin controls
＋Grounded in your organization's documents and mail
Limitations
－Best value only inside the Microsoft ecosystem
－M365 Copilot seat cost adds up org-wide
－Feature depth varies widely across apps
Evidence behind this score
Each score is built from the claims below. This is a snapshot, so check the current terms with the vendor before you commit to anything.
Claim
Source
Checked
Copilot is embedded across Microsoft 365 apps with tenant-level data protection
Microsoft 365 Copilot documentation
Jun 2026
Intelligence on Microsoft Copilot
Securityhigh impactAug 18, 2026
A chained one-click flaw let attackers make Copilot Personal leak its own users' data
Varonis Threat Labs disclosed CoSnitch (CVE-2026-24301), three chained weaknesses in Microsoft Copilot Personal: an undocumented URL parameter, Copilot's own web-fetch behavior, and a memory-poisoning path where a summarized webpage injects instructions that persist in a user's memory store through password changes and device re-enrollment. A single crafted link could silently pull data from a victim's connected accounts. Microsoft shipped a fix on August 18; Varonis found no evidence of in-the-wild exploitation before the patch, and the flaw is scoped to Copilot Personal rather than Microsoft 365 Copilot Enterprise. It is the third single-click Copilot flaw Varonis has found this year, and personal accounts routinely sit on the same device as enterprise data.
Microsoft CopilotVaronis Threat Labs disclosure; The Hacker News and Dark Reading coverage