Glean vs Microsoft 365 Copilot
A side-by-side comparison of Glean and Microsoft 365 Copilot — two options for ai copilots & automation. Pricing, features, and honest pros and cons.
Category
AI Copilots & Automation
AI Copilots & Automation
Rating
4.5 / 5
4.0 / 5
Pricing
Enterprise / Custom
$30/user/mo add-on
Best for
Firms wanting one AI layer over all internal documents and deal history
Microsoft-standardized firms wanting AI inside existing workflows
Key features
- Enterprise search across 100+ SaaS connectors
- Permissions-aware knowledge graph respecting source ACLs
- AI assistant grounded in company data with citations
- No-code agent builder for internal workflows
- Deployment options across major model providers
- Drafting and rewriting in Word and Outlook
- Excel analysis, formula help, and data insights
- Teams meeting recaps and action items
- Grounding in tenant data via Microsoft Graph
- Copilot Studio for building custom agents
Pros
- Best-in-class relevance on messy internal knowledge
- Respects existing document permissions out of the box
- Model-agnostic — not locked to one AI vendor
- Zero new-tool adoption — AI lands where work already happens
- Respects existing Microsoft 365 permissions and compliance
- Meeting recap and email triage deliver quick, visible wins
Cons
- Enterprise-only pricing with meaningful seat minimums
- Value depends on connector coverage of your stack
- Deployment and governance take real IT effort
- Doubles or more the per-seat cost on top of base licenses
- Output quality varies by app; Excel depth still maturing
- Requires tenant data hygiene to avoid oversharing risks